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 Post subject: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 1st, 2018, 3:22 
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I have a Toshiba MK5065GSXF HDD2J62 TV02 500GB drive. The laptop it was in is older. The drive was made 18OCT2011. Basically it stopped being correctly identified in Linux. The data could not be read but the drive would report as 7GB instead of 500GB. Then it stopped loading in linux after I was in the middle of a DD clone attempt. I somehow managed to get 30GB after maximizing the perceived boundaries with TestDisk. It still wasn't seeing the whole 500GB, only about 50-60GB were seen. So after it completely stopped being seen in Linux the BIOS was seeing it. It noted the manufacturer correctly. I was sleep deprived so I didn't make note of the reported HDD size. But, the BIOS stopped even recognizing it. It's a blank spot now. The drive gets power and the motor runs. The heads are not stuck, there's no clicking. It's the first time I've had this type of failure. I've dealt with heads clicking before and made it through with no or minimal data loss.

This will be a complete bust if I can't fully diagnose the problem and it appears to be the HDD firmware so far. I have not found any way to back up the presumed corrupted firmware, and then write over it with proper firmware. I see there are people selling some likely expensive products to do this but after having seen some hacks on replacing Seagate HDD firmware I thought some one might be able to point me in the right direction. I will keep googling and reading through this site in the mean time.

I am an indigent whistleblower and this drive had a lot of things that I had no money to buy a back up drive for. A lot of legal work is on this drive.

I am in the process of trying to get MHDD working on a bootable CD. I have a few links that I'm going to try since the last few didn't work. I'll post the results of that if I get it working. If there is any other software or specifics that some one can mention regarding toshiba firmware copying and flashing please chime in.

Regards


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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 1st, 2018, 4:08 
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These threads may be of interest to you:

http://www.hddoracle.com/viewtopic.php?f=59&t=1254
http://www.hddoracle.com/viewtopic.php?f=45&t=751

BTW, I would use ddrescue or HDDSuperClone to clone your drive. These tools understand how to work with bad sectors.

http://www.sdcomputingservice.com/hddsuperclone

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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 1st, 2018, 5:33 
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I'm going through those threads now. This is the sort of help I was hoping for. I don't mind googling for info but sometimes it doesn't yield useful results because the searcher simply doesn't know that certain keywords would result in useful hits, or google simply returns garbage.

The drive isn't being picked up at all so I think ddrescue is out. But this HDDSuperclone looks extremely useful. The os and bios bypass is precisely what I need. I have a plateful now to go through those links you gave me and to learn. I've already bookmarked the one thread as it has the toshiba low level commands I was hoping to find. I'll have to wget the info too so I'll always have it.

Many many thanks to you. If I make it to the point of recovering some of what I hope to recover I'll be sure to give links so you all can see the whistleblowing work I've done and am doing and it may come in handy for any of you if you find yourselves dealing with the court system, which is a fully operation RICO enterprise at this point in time.

Off to read...
Regards


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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 1st, 2018, 8:01 
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2am time to call it quits for the day. MHDD was successfully burned onto CD and the software loaded. It did not detect the Toshiba drive with the PCB connected to it, nor with it hanging alone w/o the drive. I can confirm that the drive is running. I can physically feel it vibrating like it's seeking position in a non stop loop.


In regards to HDDSuperclone, there is a warning that it can not disable some of the built in ubuntu attempts to fix a drive. I don't think it's worth a gamble until I know better what I'm dealing with. I did see in the one thread that you linked that Spildit posted the following regarding my type of drive:

Quote:
Most Toshiba drives that arrive to me for recovery have problems related to bad sectors, dying heads and sometimes translator related issues. Lacking something like PC3K that allow to create a virtual translator and read from the utility it might be a challenge to clone those drives or to extract data out of them.


And

Quote:
Defective models that I see the most are MKxxxxGSYN and MKxxxxGSX. On all of those the standard procedure would be to use either PC3K or MRT Pro to read CPs, create a virtual translator and copy the data from the active utility with the virtual translator. This is the general procedure nowadays and do work on the majority of cases.

If you don't have any of those tools but you still have something like HRT (latest version with the Toshiba Sata tool + DRE) or SeDiv you can try to clear S.M.A.R.T., G-List and clone either with the HRT-DRE or any other hardware based imager.


I will look into these other tools mentioned. I may join that forum to try to see what Spildit might be able to communicate regarding my issues.


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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 1st, 2018, 14:53 
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Well ....

First of all it's a Toshiba drive so all of the CPs are on the ROM (PCB) with the exception of a few "modules" like the G-List, Password module, etc ...

In "normal" cases when you have completly "dead" heads or pre-amp the drive should just click.

On your case you say that your drive is spinning and it doesn't produce any starnge sound.

Can you ear the heads moving when you first power up the drive ?

If the data inside the drive is important please do consider the use of a professional data recovery service !!!

If you want a do-it-yourself "fix" start by getting a TTL adaptor - http://www.hddoracle.com/viewtopic.php?f=46&t=192 - connect it to the drive as already posted and press "enter" on your terminal application 8like HyperTerminal). You should see a prompt like ">". If not (and if your TTL works fine when connected to another similar drive then you can start to investigate the possibility of a bad PCB. If the PCB is bad you can replace it with a compatible one but you MUST move the ROM chip from the old PCB to the new one and if you damage that chip it will be IMPOSSIBLE to recover the data ever again !!! So be very carefull !!!

If the PCB is not the "problem" then maybe the G-List is "damaged" and somehow making the drive "stuck" in BSY status or something simmilar. When you run MHDD what status registers does the drive show ? Can you see a gren/blue light on BSY ? Can you see DRDY / DSC lit up ? Or the PCB is not showing any register status ?

Can you detect the drive with MHDD (at least the correct port) and post a picture of it ?

If the drive have bag G-List it should be "easy" to "fix" for data recovery so a recovery of a drive in this condition shouldn't be that expensive.

What i can't figure out is the loss of capacity that you mentioned .... I would have to see the drive to attempt to figure out what is wrong with it.

It's kind of "hard" to diagnose the issue over a forum without having the drive with me ...

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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 1st, 2018, 15:04 
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A trick to remove the drive from BSY state is using the TTL and press enter on terminal. Sometimes the drive will be out of the BSY state and you should be able to detect the drive. If the drive reports DRDY and DSC you can then send the "Super On" and the "Clear G-List" command ....

But this will not help if the heads did die or if the PCB itself is broken (not very likely) ...

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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 2nd, 2018, 7:35 
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Spildit wrote:
Well ....

First of all it's a Toshiba drive so all of the CPs are on the ROM (PCB) with the exception of a few "modules" like the G-List, Password module, etc ...


I did catch this part of comments made elsewhere either by you or someone else, so I'm grateful that you're reinforcing this structural difference that you researchers have figured out, no thanks to Toshiba. At the risk of sounding like someone who has never programmed at a low level (ASM) or done much to familiarize myself with drives could you state what CPs are? I understand they contain/are modules that are used in rebuilding ROMs/firmware.

Spildit wrote:
In "normal" cases when you have completly "dead" heads or pre-amp the drive should just click.


This I've experienced before with a few desktop drives. The current drive is from a laptop and it doesn't seem like a clicking.The arm moves like it's seeking a position, it stops, repeats. It doesn't make the sound like it's smacking into the boundaries in which it moves.

Spildit wrote:
Can you ear the heads moving when you first power up the drive ?


Yes. For the first second and by the 2nd second it's starting the repetitive sound as if it's seeking.

Spildit wrote:
If the data inside the drive is important please do consider the use of a professional data recovery service !!!


The option is a consideration but I'd rather sit on this and try to manage it myself. Judges and BAR members are not happy with my pro per whistle blowing work. They aren't used to former research scientists studying law and then pointing out all the due process violations they commit as a matter of SOP. Not only do I have to worry about trying to save data, but I have to worry about being able to trust who I might send it to if I decide I can't go without it.

Spildit wrote:
If you want a do-it-yourself "fix" start by getting a TTL adaptor - http://www.hddoracle.com/viewtopic.php?f=46&t=192 - connect it to the drive as already posted and press "enter" on your terminal application 8like HyperTerminal). You should see a prompt like ">". If not (and if your TTL works fine when connected to another similar drive then you can start to investigate the possibility of a bad PCB. If the PCB is bad you can replace it with a compatible one but you MUST move the ROM chip from the old PCB to the new one and if you damage that chip it will be IMPOSSIBLE to recover the data ever again !!! So be very carefull !!!


I am checking into whether some new TTL adaptors that I bought which use the https://cdn-shop.adafruit.com/datasheets/DS_PL2303TA_d20120504.pdf PL2303TA chip will work without the 1.8V low voltage issue. I ordered them before I came across postings on the issue. I normally use Linux. I have winxp 64 bit on the desktop w/debian. I presume the hyperterminal is like Putty and I select a port for the drive in order to issues commands. It would be awesome if it's a bad PCB but from what I've read it really sounds like the firmware/ROM is damaged. I've done some soldering. Almost completed the wavebubble project ladyada put out. Fun bit of work but I don't like doing ICs with the super tiny traces. If it turns out all I need to do is replace the PCB I'll be grateful.

Spildit wrote:
If the PCB is not the "problem" then maybe the G-List is "damaged" and somehow making the drive "stuck" in BSY status or something simmilar. When you run MHDD what status registers does the drive show ? Can you see a gren/blue light on BSY ? Can you see DRDY / DSC lit up ? Or the PCB is not showing any register status ?

I'm not sure what the g-list is either other than some structure that sometimes gets corrupted. I'm sure I missed a guide to some of these things. MHDD doesn't appear to pick up the drive. Working drives show up in the list to select from, but when I only hook up the non-working toshiba it doesn't show any thing. I was thinking ROM/firmware corruption could damage the drive name/info so that MHDD doesn't even pick it up but I'm speculating.

Spildit wrote:
Can you detect the drive with MHDD (at least the correct port) and post a picture of it ?


I booted into MHDD, connected the Toshiba to the primary SATA port, hit shift+f3 to select drive/port, selected primary port 1. It throws errors and flags. I took pictures of this process. I need to DL from camera to lower the size then I'll post with text.

Spildit wrote:
What i can't figure out is the loss of capacity that you mentioned .... I would have to see the drive to attempt to figure out what is wrong with it.


To me the loss of capacity seems to be a part of the firmware/ROM corruption or reading errors; however, if it were reading errors why would it be consistently 7GB over a few reboots. I can't fathom any other explanation for it. Before the drive stopped getting picked up TestDrive clearly reported only 7GB initially before I told it to maximize boundaries, which still only put the 500GB drive at ~50GB total capacity. If the size of the partition is always a function of what's written on disk then corrupted data should account for the problem. I don't mind troubleshooting. I just needed to get to some locations (this site and some others are great but took a while to find) where I can hunker down and study the issue. I need to know what's going on and if it's within my control fix it, if not, I need to think hard about that other step. Legal activism at a true grassroots level requires very careful maneuvering. Stuff I'd rather not be involved in. I'd rather be replicating more of Tesla's patents and work and creating simple howto's for others to properly build and use his circuits the way they are supposed to be used, not as light shows. So, with all of that said, I think a number of you demonstrate a proficiency with low level work and reverse engineering (ie: TOSHIBA ROMs) that I would consider someone here rather than a large company to fix this if I get to a point where I decide to send it off.

Pictures to be UL'd soon.


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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 2nd, 2018, 9:01 
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Joined: February 1st, 2018, 2:49
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The TOSHIBA was hooked up after the standalone MHDD program was loaded. It was connected to primary SATA. These are the results after hitting shift+f3 and selecting the primary.
Image

Here's more images of it in MHDD
Image
Image
[/img]https://s13.postimg.org/7kem7xft3/0202180113.jpg-shrunk.jpg[/img]


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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 2nd, 2018, 14:26 
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Joined: December 19th, 2006, 8:49
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gringobonk wrote:
Spildit wrote:
Well ....

First of all it's a Toshiba drive so all of the CPs are on the ROM (PCB) with the exception of a few "modules" like the G-List, Password module, etc ...


I did catch this part of comments made elsewhere either by you or someone else, so I'm grateful that you're reinforcing this structural difference that you researchers have figured out, no thanks to Toshiba. At the risk of sounding like someone who has never programmed at a low level (ASM) or done much to familiarize myself with drives could you state what CPs are? I understand they contain/are modules that are used in rebuilding ROMs/firmware.

Spildit wrote:
In "normal" cases when you have completly "dead" heads or pre-amp the drive should just click.


This I've experienced before with a few desktop drives. The current drive is from a laptop and it doesn't seem like a clicking.The arm moves like it's seeking a position, it stops, repeats. It doesn't make the sound like it's smacking into the boundaries in which it moves.

Spildit wrote:
Can you ear the heads moving when you first power up the drive ?


Yes. For the first second and by the 2nd second it's starting the repetitive sound as if it's seeking.

Spildit wrote:
If the data inside the drive is important please do consider the use of a professional data recovery service !!!


The option is a consideration but I'd rather sit on this and try to manage it myself. Judges and BAR members are not happy with my pro per whistle blowing work. They aren't used to former research scientists studying law and then pointing out all the due process violations they commit as a matter of SOP. Not only do I have to worry about trying to save data, but I have to worry about being able to trust who I might send it to if I decide I can't go without it.

Spildit wrote:
If you want a do-it-yourself "fix" start by getting a TTL adaptor - http://www.hddoracle.com/viewtopic.php?f=46&t=192 - connect it to the drive as already posted and press "enter" on your terminal application 8like HyperTerminal). You should see a prompt like ">". If not (and if your TTL works fine when connected to another similar drive then you can start to investigate the possibility of a bad PCB. If the PCB is bad you can replace it with a compatible one but you MUST move the ROM chip from the old PCB to the new one and if you damage that chip it will be IMPOSSIBLE to recover the data ever again !!! So be very carefull !!!


I am checking into whether some new TTL adaptors that I bought which use the https://cdn-shop.adafruit.com/datasheets/DS_PL2303TA_d20120504.pdf PL2303TA chip will work without the 1.8V low voltage issue. I ordered them before I came across postings on the issue. I normally use Linux. I have winxp 64 bit on the desktop w/debian. I presume the hyperterminal is like Putty and I select a port for the drive in order to issues commands. It would be awesome if it's a bad PCB but from what I've read it really sounds like the firmware/ROM is damaged. I've done some soldering. Almost completed the wavebubble project ladyada put out. Fun bit of work but I don't like doing ICs with the super tiny traces. If it turns out all I need to do is replace the PCB I'll be grateful.

Spildit wrote:
If the PCB is not the "problem" then maybe the G-List is "damaged" and somehow making the drive "stuck" in BSY status or something simmilar. When you run MHDD what status registers does the drive show ? Can you see a gren/blue light on BSY ? Can you see DRDY / DSC lit up ? Or the PCB is not showing any register status ?

I'm not sure what the g-list is either other than some structure that sometimes gets corrupted. I'm sure I missed a guide to some of these things. MHDD doesn't appear to pick up the drive. Working drives show up in the list to select from, but when I only hook up the non-working toshiba it doesn't show any thing. I was thinking ROM/firmware corruption could damage the drive name/info so that MHDD doesn't even pick it up but I'm speculating.

Spildit wrote:
Can you detect the drive with MHDD (at least the correct port) and post a picture of it ?


I booted into MHDD, connected the Toshiba to the primary SATA port, hit shift+f3 to select drive/port, selected primary port 1. It throws errors and flags. I took pictures of this process. I need to DL from camera to lower the size then I'll post with text.

Spildit wrote:
What i can't figure out is the loss of capacity that you mentioned .... I would have to see the drive to attempt to figure out what is wrong with it.


To me the loss of capacity seems to be a part of the firmware/ROM corruption or reading errors; however, if it were reading errors why would it be consistently 7GB over a few reboots. I can't fathom any other explanation for it. Before the drive stopped getting picked up TestDrive clearly reported only 7GB initially before I told it to maximize boundaries, which still only put the 500GB drive at ~50GB total capacity. If the size of the partition is always a function of what's written on disk then corrupted data should account for the problem. I don't mind troubleshooting. I just needed to get to some locations (this site and some others are great but took a while to find) where I can hunker down and study the issue. I need to know what's going on and if it's within my control fix it, if not, I need to think hard about that other step. Legal activism at a true grassroots level requires very careful maneuvering. Stuff I'd rather not be involved in. I'd rather be replicating more of Tesla's patents and work and creating simple howto's for others to properly build and use his circuits the way they are supposed to be used, not as light shows. So, with all of that said, I think a number of you demonstrate a proficiency with low level work and reverse engineering (ie: TOSHIBA ROMs) that I would consider someone here rather than a large company to fix this if I get to a point where I decide to send it off.

Pictures to be UL'd soon.



Quote:
Complex HRT for HDD Fujitsu works through HDD standard commands giving access
to modules of service area. According to tradition (before Fujitsu was entered to HRT) these
modules are named configuration pages (CP).


(Quote from HRT manual)

- CP on Fujitsu would be "firmware modules". You can do an "image" of the full ROM with an external programmer or by terminal with something like this - http://www.hddoracle.com/viewtopic.php?f=22&t=2217 and then use something like this - http://www.hddoracle.com/viewtopic.php?f=22&t=1724 to "extract" indivudual "modules" of the ROM image intro CP (portions of data). Of course you will end up only with modules or CPs that are written on the ROM chip. You will not be able to "extract" module/CP "DD" as it's written on the platter. For that you will need to use Vendor Specific Commands.

- Description of sound makes me believe that the drive try to read firmware and so heads are moving so pre-amp should still be "alive" or at least not shorted. So most likely it's the G-List on the platter that it's causing the problem.

- ANY DECENT data recovery firm will NOT CARE about the data that you have on the drive (as long as it's not child porn). You should be ok. No-one will bother to read/look at your work. Most likely they will just open some pictures or videos to see if the recovery was properly done. No-One would bother to be reading text files.

- TTL low voltage "issue" is only a problem with newer SEAGATE drives. Don't worry about that on Toshiba.

- Most likely it will NOT be a PCB issue. And if firmware it's damaged most likely it will be the one inside the platter (written to the platter) and not the one written to the ROM ....

- G-List is the grow defect list - READ HERE - http://www.hddoracle.com/viewtopic.php?f=46&t=1402 - IT'S VERY IMPORTANT FOR YOU TO READ THIS FIRST !!!

- Firmware damage can cause the described problem and drive will not be picked up by MHDD if for example it's stuck on BSY.

Will check your other post in a moment.

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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 2nd, 2018, 14:35 
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gringobonk wrote:
The TOSHIBA was hooked up after the standalone MHDD program was loaded. It was connected to primary SATA. These are the results after hitting shift+f3 and selecting the primary.
Image

Here's more images of it in MHDD
Image
Image
[/img]https://s13.postimg.org/7kem7xft3/0202180113.jpg-shrunk.jpg[/img]


OK ....

Now i did changed my mind.

Now i would say that the PCB is damaged. If this were to be a IDE drive i would say that some IDE pins were broken. For a SATA i would say bad PCB.

The drive reports HPA and strange characters. This is not a typical G-List issue that would get the drive "stuck" on BSY state ... So unless your motherboard is doing somethibg "fishy" to the drive then you might have a broken PCB. If not then you have damage to firmware. If you have external programmer you can dump ROM on the drive and check the integrity of it with the posted tool.

On Toshiba if the ID CP get's damaged the drive reports as "Drive under construction" (on the tests that i've done) so ... your drive might be different and your motherboard might not be helping but if i were to connect this drive to the HRT card and if i were to get this sort of ID i would start by checking ROM and PCB. I don't think that damaged g-list on the platter would cause this sort of message when ID the drive by MHDD.

So .... Either PCB replacement or ROM have damaged CP on it ...

I also don't think that bad heads would cause this.

Try another test, remove the PCB from the drive and plug the PCB only. DO NOT OPEN THE DRIVE ITSELF !!!! iF YOU PLUG THE PCB ONLY do you get any response from MHDD ?

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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 2nd, 2018, 15:14 
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Forget about plugging the PCB only ....

I did just test it out....

If you plug the PCB only the drive will remain BSY and it will not ID ...

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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 2nd, 2018, 15:17 
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I did test by connecting just the PCB of a Toshiba test drive to HRT and run Victoria on it :

Attachment:
1.jpg
1.jpg [ 62.39 KiB | Viewed 2328 times ]


Drive stuck on BSY ...

Now if your drive is stuck on BSY (because of bad G-List for example) i can't know how the motherboard will react and what info will be displayed by MHDD ....

So if heads were gone and PCB were removed on a direct connection to the drive you would see BSY only (if you don't use TTL on it)....

If the drive were to be showing the same "garbage" when attempting to ID i would suspect of bad PCB.

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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 2nd, 2018, 18:39 
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The ATA Identify Device command is returning a 512-byte block filled with 0x7F6C.

    total LBAs = 9181853844272611180 = 0x7F6C7F6C7F6C8000 (rounded up)

You can see this by executing the following commands in a Windows DOS box.

Code:
C:\>debug
-e 100 7f 6c
-n test.bin
-rcx
CX 0000
:2
-w
Writing 00002 bytes
-q

C:\>type test.bin
l         <--- these two characters will display differently in a DOS box (same as in MHDD)
C:\>del test.bin

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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 2nd, 2018, 18:46 
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How do we know the OP is correctly using MHDD? No mention of making sure the BIOS was in IDE mode. Can you detect a good drive plugged into the same port with MHDD? The result is an indication of no device plugged in at all.

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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 2nd, 2018, 18:47 
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So ... Let's say the drive have a G-List problem and it's stuck on BSY ...

Is there any chance that the motherboard itself is dumping that 0x7F6C "pattern" to the MHDD ? Because the drive is not directly connected to some sort of hardware assisted firmware card the BIOS/motherboard might not be displaying the true status of the drive ...

If the drive is indeed sending that 0x7F6C pattern (instead of the system) then i would say that either PCB or firmware should be "investigated".

Lacking firmware tools i would remove the PCB out of a known good Toshiba drive and pluig it alone on your system to see how MHDD detects the PCB. If it's BSY like mine and if with broken drive you got that pattern then i would try to plug just the PCB of the bad drive and see if i get BSY or the same pattern. If the same pattern is observed then PCB is broken or you have damaged ROM CPs. If you plug the PCB and you can see that it's stuck on BSY then you can assume that the problem might be related to SA on the drive itself ...

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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 2nd, 2018, 18:58 
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In regards to HDDSuperclone, there is a warning that it can not disable some of the built in ubuntu attempts to fix a drive. I don't think it's worth a gamble until I know better what I'm dealing with.

That is just a simple disclaimer that the software is not responsible for anything the OS does when the OS detects the drive. Linux usually works much better with failing or bad drives then Windows does, and should not normally alter the drive. If I were to make that same disclaimer for Windows, it would be more like "DON'T PLUG THE DRIVE INTO A COMPUTER THAT IS RUNNING WINDOWS!"

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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 2nd, 2018, 19:05 
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Spildit wrote:
Forget about plugging the PCB only ....

I did just test it out....

If you plug the PCB only the drive will remain BSY and it will not ID ...

Please correct me if I'm wrong, but don't you need to wait for a few minutes before a Toshiba drive will communicate on the terminal port? If so, could this also apply to ATA? That is, would you also need to wait for several minutes for a busy drive to come ready via ATA?

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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 2nd, 2018, 19:12 
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fzabkar wrote:
Spildit wrote:
Forget about plugging the PCB only ....

I did just test it out....

If you plug the PCB only the drive will remain BSY and it will not ID ...

Please correct me if I'm wrong, but don't you need to wait for a few minutes before a Toshiba drive will communicate on the terminal port? If so, could this also apply to ATA? That is, would you also need to wait for several minutes for a busy drive to come ready via ATA?


I did wait several minutes .... I didn't try terminal just ATA. The "sollution" sometimes to remove the drive from BSY is to press enter on terminal to get >. On my test i didn't even plug a terminal because the "goal" is to test the PCB without one... I can re-do the test tomorrow and see if the drive will respond to TTL "enter" if i plug just the PCB ...

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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 2nd, 2018, 19:21 
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Spildit wrote:
So ... Let's say the drive have a G-List problem and it's stuck on BSY ...

Is there any chance that the motherboard itself is dumping that 0x7F6C "pattern" to the MHDD ? Because the drive is not directly connected to some sort of hardware assisted firmware card the BIOS/motherboard might not be displaying the true status of the drive ...

If the drive is indeed sending that 0x7F6C pattern (instead of the system) then i would say that either PCB or firmware should be "investigated".

Lacking firmware tools i would remove the PCB out of a known good Toshiba drive and pluig it alone on your system to see how MHDD detects the PCB. If it's BSY like mine and if with broken drive you got that pattern then i would try to plug just the PCB of the bad drive and see if i get BSY or the same pattern. If the same pattern is observed then PCB is broken or you have damaged ROM CPs. If you plug the PCB and you can see that it's stuck on BSY then you can assume that the problem might be related to SA on the drive itself ...

The MHDD result is that the status and error registers are both 0x7F, which is the standard result when no device is connected. If the drive is spinning up when connected, it would be detected and give some other result. Don't assume the MHDD results are correct. The OP may need some more direction on how to properly use MHDD.

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 Post subject: Re: Toshiba Firmware appears to be corrupt, suggestions?
PostPosted: February 2nd, 2018, 21:43 
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I have a lot to take in from all of the responses and I humbly acknowledge that MHDD is not a tool that I have used frequently. Therefore, after reviewing and thinking through all of the responses, I will spend extra time with MHDD to see if I can yield any other results as a result of perhaps not utilizing it properly. I'm working to keep my head above water right now but I will post further tests soon. I'm grateful for all of the responses regarding my issue.


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