HDD GURU FORUMS

How do I remove pages from a dump in VNR. I have a Monolith that is a new chip (not in database). I have read the chip with the help of Gosha, but now I need to remove repeating pages (3 out of every 4 pages repeat). How do I do this?

It appears that the two most significant address bits are "don't care".

fzabkar wrote:It appears that the two most significant address bits are "don't care".

It is unlike you to give an answer like that. I guess I upset you at some point. If so my apologies.

LOL!

"Don't care" is a genuine, widely used engineering term which means that the state of a particular signal is irrelevant. That is, the signal can be either a 1 or a 0 without affecting the output.

For example, an 8KB EPROM might use the same package and pinout as a 16KB EPROM. The only difference is that the latter makes use of an additional address bit. This additional bit is seen as "don't care" or "not connected" by the 8KB device.

Here are thousands of examples:

http://www.google.com/search?q=%22don%27t+care%22+filetype%3Apdf+%22absolute+maximum%22

fzabkar wrote:LOL!

"Don't care" is a genuine, widely used engineering term which means that the state of a particular signal is irrelevant. That is, the signal can be either a 1 or a 0 without affecting the output.

For example, an 8KB EPROM might use the same package and pinout as a 16KB EPROM. The only difference is that the latter makes use of an additional address bit. This additional bit is seen as "don't care" or "not connected" by the 8KB device.

Here are thousands of examples:

http://www.google.com/search?q=%22don%27t+care%22+filetype%3Apdf+%22absolute+maximum%22

You do realize I'm just a dumb data recovery bod don't you....

ISTM that you have configured your tool to read a device with a capacity of 4X when its real capacity is only X. The device ignores the additional address bits and simply dumps an alias of itself.

fzabkar wrote:ISTM that you have configured your tool to read a device with a capacity of 4X when its real capacity is only X. The device ignores the additional address bits and simply dumps an alias of itself.

Indeed you could be right, but setting up a new monolith chip is pretty complex (at least for me). Working out number of crystals and planes, plane, block and page size etc. This was initially set up by the VNR technician and he left a message for me to remove 3 out of 4 pages. I presumed it could be done through software as he would have set the chip to re-read with new parameters. Perhaps I didn't understand him correctly, I will check. Thanks for the input.

ddrecovery wrote: Perhaps I didn't understand him correctly, I will check. Thanks for the input.

No, you "did" understand correctly, it can be done in VNR,
Sorry I can't help you with that cuz I have done it only once, and I'm not near the computer now to check it out, and I don't remember how to do it from memory
Let's wait for the stars of VNR to answer that

jermy wrote:

ddrecovery wrote: Perhaps I didn't understand him correctly, I will check. Thanks for the input.

No, you "did" understand correctly, it can be done in VNR,
Sorry I can't help you with that cuz I have done it only once, and I'm not near the computer now to check it out, and I don't remember how to do it from memory
Let's wait for the stars of VNR to answer that

Thanks jermy.

@ddrecovery I think config is wrong. I can try check it remotely - contact with me on skype or PM please. If config is wrong, need create correct one. I can also show you how cut the pages. Need use offset element.

This must be sandisk chip, we saw chips like that before. It does work in weird "pseudo-SLC" mode for some blocks (just in case check whether the whole dump has same duplicates or just 100-200 blocks at the beginning?).
If pages duplicated in the whole dump then it's easy to remove it. Use one of options Skip area/Extract area.



All values in bytes here



x = 4 x page size (four times page size)
y = 0
z = page size

After operation OFFSETS element will appear with 1/4 capacity, continue analysis here.

By doing so you periodically extract first page out of four. The offset element is extremely flexible, you can slice dump as you like, even assemble any weird RAID config if you need to (used couple of time for this).

I check it remotely. At this case config is wrong, because pinout is wrong. It is 16-bit chip.

Mistake

Arvika logged in and its been determined that this is a 16 bit MicroSD Card but there is no pinout in either PC3K Flash of VNR. Anyone happen to have the pinout?

ddrecovery wrote:Arvika logged in and its been determined that this is a 16 bit MicroSD Card but there is no pinout in either PC3K Flash of VNR. Anyone happen to have the pinout?

What prevents you from figuring out the pinout?

I have no idea how to. Any pointers would be appreciated.

ddrecovery wrote:I have no idea how to.

What do you specifically not know? I could write a book on the topic, not that anyone would read it.

You would have one customer JB .

I am assuming that the data lines have a specific layout, so knowing which order I presume is critical. I do not know how to define them. You can tell by me saying 'assuming' 'presume' that I have no idea.

ddrecovery wrote:You would have one customer JB .

I am assuming that the data lines have a specific layout, so knowing which order I presume is critical. I do not know how to define them. You can tell by me saying 'assuming' 'presume' that I have no idea.

Well,
Its Pretty Interesting How Its Done ,You Will Need To Start It Someday .My Days Have Started My PC3K Flash Ver 4.0 Is Here in India With Me .VNR Is Next

Amarbir[CDR-Labs] wrote:Well,
Its Pretty Interesting How Its Done ,You Will Need To Start It Someday .My Days Have Started My PC3K Flash Ver 4.0 Is Here in India With Me .VNR Is Next

I have both PC3K Flash and VNR, but defining pinouts on a Monolith is a whole different ballgame. However you are correct, we do need to start doing it.