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 Post subject: EDIT 0B/2B DISABLE
PostPosted: August 17th, 2018, 17:31 
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Hi.

I have an HDD that I have formatted the SA.
In order to write the SA again I have loaded the LDR and I have written it by track.

Now the problem is that it does not find the 0x01 module when the disk is booted, but if I load it manually and the LDR, I have access by ID, ABA and TRACK.

What I want is to edit the address of module 0x01, in the ROM, but it does not leave me the option to edit the address.

Greetings.


Attachments:
Image.jpg
Image.jpg [ 340.39 KiB | Viewed 1338 times ]

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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 17th, 2018, 17:33 
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Can you upload the ROM and module 01?

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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 17th, 2018, 17:43 
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fzabkar wrote:
Can you upload the ROM and module 01?


Yes

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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 17th, 2018, 17:46 
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mhp666 wrote:
fzabkar wrote:
Can you upload the ROM and module 01?


Yes

I mean, can you upload the modules as an attachment to this thread.

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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 17th, 2018, 17:52 
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ok, I sent it to you in rar


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rom and 01.rar [246.24 KiB]
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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 17th, 2018, 18:20 
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By ID I do not read the modules, just by track and ABA

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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 17th, 2018, 18:24 
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ROM module 0B is the active directory. It points to ABA 0x1171F as the location of module 01.

Module 01 points to the same ABA:

Code:
12 02 01 00 18 00 03 18 90 00 1F 17 01 00 1F 17 01 00
                              ^^^^^^^^^^^ ^^^^^^^^^^^

What do you see at ABA 0x1171F?

Code:
Analysing ROM_WDC WD4500HLHX-01JJPV0.bin  ...

Searching for LDSCs and verifying PCMBlocks ...

LDSC   LDSC    PCMBLock       PCMBlk CS
Start  ID CS   Start - End     Exp/Act
---------------------------------------
00000  5A F1   00020 - 00FB4    5D   5D   OK
01000  01 99   01140 - 02794    DD   DD   OK
01020  02 81   02795 - 091C1    CD   CD   OK
01040  03 19   091C2 - 0E6EA    47   47   OK
01060  04 7F   0E6EB - 0EE33    BB   BB   OK
01080  05 85   0EE34 - 0F034    4D   4D   OK
010A0  06 10   0F035 - 0F449    FF   FF   OK
010C0  07 F1   0F44A - 0F84E    00   00   OK
010E0  08 BA   0F84F - 24D37    0B   0B   OK
01100  09 08   24D38 - 2D6D0    5F   5F   OK
41000  01 99   41140 - 42794    DD   DD   OK
41020  02 81   42795 - 491C1    A6   A6   OK
41040  03 F9   491C2 - 4E6DE    1A   1A   OK
41060  04 73   4E6DF - 4EE27    BB   BB   OK
41080  05 79   4EE28 - 4F028    4D   4D   OK
410A0  06 04   4F029 - 4F43D    E8   E8   OK
410C0  07 E5   4F43E - 4F842    00   00   OK
410E0  08 AE   4F843 - 64D2B    A1   A1   OK
41100  09 24   64D2C - 6D6D4    16   16   OK

LDSC   = PM Loader Config String (32 bytes)
ID     = ID byte of LDSC (byte #0)
CS     = Checksum byte or word
PCMBlk = Program Code Memory Block
Exp    = Expected checksum for PCMBLock
Act    = Actual checksum for PCMBLock


ROYL directory module 0x000B found at 0x0003FEE7

Active directory flag = 0x05

Identifying SA regions ...

Reg#  Reg size    Reg loc
----------------------------
0x00  0x00026AC0  0x00000000
0x01  0x00026AC0  0x00033900
0x02  0x00026AC0  0x00067200
0x03  0x00026AC0  0x0009AB00
0x04  0x00026AC0  0x000CE400

Verifying ROYL modules ...

ID          Size (bytes)         Address    Checksum
dir   hdr    dir       hdr
-----------------------------------------------------
0001  N/A    00003000  N/A        0001171F             N/A
000A  OK     0000003E  00000200   0003F21D   00000000  OK
000B  OK     00000119  00000200   0003FEE7   00000000  OK
020B  OK     00000119  00000200   0003EEE7   00000000  OK
0030  OK     00000400  OK         0003F2E7   00000000  OK
0047  OK     00000400  OK         0003F6E7   00000000  OK
000D  OK     0000008C  00000200   0003F25B   00000000  OK
004F  OK     00000400  OK         0003FAE7   00000000  OK

ROYL directory module 0x020B found at 0x0003EEE7

Active directory flag = 0x04

Identifying SA regions ...

Reg#  Reg size    Reg loc
----------------------------
0x00  0x00026AC0  0x00000000
0x01  0x00026AC0  0x00033900
0x02  0x00026AC0  0x00067200
0x03  0x00026AC0  0x0009AB00
0x04  0x00026AC0  0x000CE400

Verifying ROYL modules ...

ID          Size (bytes)         Address    Checksum
dir   hdr    dir       hdr
-----------------------------------------------------
0001  N/A    00003000  N/A        0001F2EA             N/A
000A  OK     0000003E  00000200   0003E21D   00000000  OK
000B  OK     00000119  00000200   0003FEE7   00000000  OK
020B  OK     00000119  00000200   0003EEE7   00000000  OK
0030  OK     00000400  OK         0003E2E7   00000000  OK
0047  OK     00000400  OK         0003E6E7   00000000  OK
000D  OK     0000008C  00000200   0003E25B   00000000  OK
004F  OK     00000400  OK         0003EAE7   00000000  OK

dir  -  Module ID/Size as reported in directory module (0x20B or 0x0B)
hdr  -  Module ID/Size as reported in module's header
N/A  -  Not Applicable
BAD  -  Module has invalid checksum. This may be due to non-existent module.

ROM modules saved to Flash$$$\000Bmods and Flash$$$\020Bmods

Active directory is 0x0B

Analysing active 0x0A module ...

Head map checksum (Expected / Actual) = 0x0000 / 0x0000 - OK
Number of heads (physical / in use) = 6/5
Head map #1 = 0x3E / 0b00111110
Head map #2 = 0x00 / 0b00000000

DCM = | Z | C S H H A C N
      : : : : : : : : : :
      : : : : : : : : : unknown
      : : : : : : : : top VCM
      : : : : : : : ACA
      : : : : : : bottom VCM
      : : : : : HSA
      : : : : media
      : : : preamp
      : : latch
      : base
      spindle motor

Analysing active 0x0D module ...

Firmware Version = 04.05G04
World Wide Name = 50014EE0AD526CBD
Model Number = WDC WD4500HLHX-01JJPV0                 
Serial Number =                     


Analysing active 0x4F module ...

ROM version = 000200A2

Analysing active 0x47 module ...

Preamp values
-----------
0  05195124
1  071A622E
2  0717702A
3  09166027
4  09136028
5  0411422E

Microjogs
-------
0  0840
1  08AC
2  07E8
3  07E0
4  07EC
5  089C

Head/Media DCM = HS

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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 17th, 2018, 18:47 
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I pass you the track -170.
Right now I do not clarify but it seems to be this:

ABA 0x1171F : -170 HEAD 0 OFFSET 0x1FA -> seems to point to the module 0x01

OFFSET FILE -170 IS 3F200

Sorry if I was wrong in something.


Attachments:
track 170.zip [90.87 KiB]
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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 17th, 2018, 19:08 
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I don't know how the ABA relates to CHS, but ...

    0x1FA x 0x200 = 0x3F400

Are the sectors numbered from 0 or 1?

(Sorry, I don't have experience in this area.)

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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 17th, 2018, 21:32 
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better give a screenshot about ROM module 0B 20B where the address of module 01 is stored, or I can help you directly via remote


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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 17th, 2018, 22:03 
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reco wrote:
better give a screenshot about ROM module 0B 20B where the address of module 01 is stored


Dir 0B

Code:
ID          Size (bytes)         Address    Checksum
dir   hdr    dir       hdr
-----------------------------------------------------
0001  N/A    00003000  N/A        0001171F             N/A
                                  ^^^^^^^^

Dir 20B

Code:
ID          Size (bytes)         Address    Checksum
dir   hdr    dir       hdr
-----------------------------------------------------
0001  N/A    00003000  N/A        0001F2EA             N/A
                                  ^^^^^^^^

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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 18th, 2018, 0:08 
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I can help you handle that through a thorough inspection via remote software if you are not reluctant to have me doing this.


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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 18th, 2018, 0:13 
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fzabkar wrote:
reco wrote:
better give a screenshot about ROM module 0B 20B where the address of module 01 is stored


Dir 0B

Code:
ID          Size (bytes)         Address    Checksum
dir   hdr    dir       hdr
-----------------------------------------------------
0001  N/A    00003000  N/A        0001171F             N/A
                                  ^^^^^^^^

Dir 20B

Code:
ID          Size (bytes)         Address    Checksum
dir   hdr    dir       hdr
-----------------------------------------------------
0001  N/A    00003000  N/A        0001F2EA             N/A
                                  ^^^^^^^^



The address recorded in 0B 20B contradicts against each other , we can fix this issue by modifying its address. Perhaps the module recording the addresses malfunctions or something else, but no big an issue


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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 18th, 2018, 2:24 
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reco wrote:
The address recorded in 0B 20B contradicts against each other , we can fix this issue by modifying its address. Perhaps the module recording the addresses malfunctions or something else, but no big an issue

AIUI, the contradiction should not be a problem since 0B is active, not 20B. Anyway, you don't need remote access to make the changes.

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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 18th, 2018, 4:35 
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mhp666 wrote:
I pass you the track -170.
Right now I do not clarify but it seems to be this:

I pass you the track -170.
Right now I do not clarify but it seems to be this:

ABA 0x1171F : -170 HEAD 0 OFFSET 0x1FA -> seems to point to the module 0x01

OFFSET FILE -170 IS 3F200

Sorry if I was wrong in something.


Rectification :

ABA 0x1171F : -170 HEAD 0 OFFSET 0x1F9 -> seems to point to the module 0x01

OFFSET FILE -170 IS 3F200

The sectors are numbered from 0.

I'll study the case a little more and I'll tell you.
I return to comment what I did:
             Format the SA
             I write SA by track.
and the problem in question arises.
reco wrote:
I can help you handle that through a thorough inspection via remote software if you are not reluctant to have me doing this.

I do not have any problem, the problem is the time difference.
I would like to leave the case solved only to learn and if it is worth of experience to someone.
As soon as we agree if it suits you, I give you a connection.

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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 18th, 2018, 16:36 
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It may be that the problem that I have committed is to format the SA, without having synchronized the SA translator, for that reason I believe that it does not find the modules by ID, and when loading the module 0x11 I can operate by track and by ABA.

I'm trying to format the SA synchronizing the translator but I get an error.

This is just a suggestion, I'm not sure.

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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 18th, 2018, 16:43 
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ISTM that ABA 0 is sector 0 of cylinder -256. The number of sectors per track is 825.

Therefore ...

    0x1171F = (825 SPT x 86 tracks) + 0x1F9 sectors

    -256 + 86 = -170

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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 18th, 2018, 16:57 
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Thank you very much for this information.
Now I understand what the ABA is.

When I search the modules by track I see that they all start with ROYL.
In rom modules the same thing happens and if I'm not wrong the offeset 0x08 indicates the module number follows 00 01 00 and then checksum, but when I search for them, I'm not clear about the header.

I have now formatted all the tracks of the SA and recorded the tracks but it remains the same.
Could it be the translator of the SA?

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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 18th, 2018, 17:14 
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IIUC, module 0x35 is the defect list for the SA. Module 0x30 in the ROM is the translator for the SA.

ISTM that an SA format would identify any defects, and these would then need to be written to mod 0x35. Regenerating the SA translator should then update mod 0x30. ???

You could try to edit mod 0x20B (and recalculate its checksum), as suggested by @reco, but I would be surprised if this made any difference. I'm prepared to be proven wrong, though.

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 Post subject: Re: EDIT 0B/2B DISABLE
PostPosted: August 18th, 2018, 17:28 
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Then if I'm not wrong:
ABA = (HEAD * SPT * MAX_CYL) + [SPT * (MAX_CYL + TRACK)] + OFFSET
Being the negative track

HEAD = ABA MOD ( SPT * MAX_CYL )
TRACK = [ABA - (HEAD * SPT * MAX_CYL) ] MOD SPT - MAX_CYL
OFFSET = ABA - (HEAD * SPT * MAX_CYL) - [SPT * (MAX_CYL + TRACK)]

If I'm not mistaken

Also, until module 0x11 is loaded, it can not read by track or ABA, as it happens in my case.

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