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| Mod 40 WDC WD30EZRX-00DC0B0 http://forum.hddguru.com/viewtopic.php?f=11&t=45925 |
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| Author: | sin [ March 10th, 2026, 13:45 ] | ||
| Post subject: | Mod 40 WDC WD30EZRX-00DC0B0 | ||
WDC WD30EZRX-00DC0B0 80.00A80 Microcode:00040027 The drive was tried to be recovered elsewhere. Not sure if the other company could do it. Here we have a mod40 damage. 41 42 43 are ok Any ways to patch stuff from 41 42 43 and get this boy up and running? --
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| Author: | fzabkar [ March 10th, 2026, 15:59 ] |
| Post subject: | Re: Mod 40 WDC WD30EZRX-00DC0B0 |
Module 0x40 is divided into regions. There is a table of regions (offset + size) at the start of the module. It appears that the first 3 regions are either missing completely (regions 1 and 2) or partially (region 3). IMHO, it would have been better if the bad sectors had been identified with a suitable fill pattern (eg BAD!) rather than zeros. Code: Offset(h) 00 04 08 0C 00000050 58010000 00010000 00000060 58020000 000A0000 580C0000 F01D0100 00000070 482A0100 E0160000 28410100 E02E0000 00000080 08700100 98000000 A0700100 00B70000 00000090 A0270200 D00C0000 90560300 101F0000 000000A0 70340200 DB210100 4C560300 20000000 000000B0 6C560300 24000000 A0750300 20000000 000000C0 C0750300 B8020000 78780300 D0030000 Code: Offset(h) 00 04
offset size -------- -------- 00000000 58010000 00010000 region #1 00000008 58020000 000A0000 region #2 00000010 580C0000 F01D0100 region #3 00000018 482A0100 E0160000 00000020 28410100 E02E0000 00000028 08700100 98000000 00000030 A0700100 00B70000 00000038 A0270200 D00C0000 00000040 90560300 101F0000 00000048 70340200 DB210100 00000050 4C560300 20000000 00000058 6C560300 24000000 00000060 A0750300 20000000 00000068 C0750300 B8020000 00000070 78780300 D0030000 |
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| Author: | fzabkar [ March 10th, 2026, 16:25 ] |
| Post subject: | Re: Mod 40 WDC WD30EZRX-00DC0B0 |
Region #1 is located at the same offset in modules 0x41, 0x42 and 0x43. Modules 0x41, 0x42 and 0x43 are identical apart from their module IDs and checksums. The region tables in modules 0x40 and 0x41 are identical. This suggests that the modules have the same structure, but the respective regions do not always contain identical content. Region #2 is located at the same offset in module 0x66. The data are identical. Region #1 in module 0x66 also matches module 0x40. In fact, module 0x66 is a full copy of 0x40. It differs only in the ID and checksum. |
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| Author: | sin [ March 11th, 2026, 13:12 ] |
| Post subject: | Re: Mod 40 WDC WD30EZRX-00DC0B0 |
Hi Franc! Thanks for the excellent information. I have never seen any one who is so proficient, humble and sharing in my life. Thanks for holding my hand here. It has been 10 years + i have worked on so many WDs but never ever did the 40 reworkings. Sent you a PM. |
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| Author: | fzabkar [ March 11th, 2026, 13:16 ] |
| Post subject: | Re: Mod 40 WDC WD30EZRX-00DC0B0 |
sin wrote: Sent you a PM. I don't do PMs anymore. If you can't regenerate 0x40 from 0x66, upload 0x66 and I'll do it for you. |
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| Author: | sin [ March 12th, 2026, 2:51 ] |
| Post subject: | Re: Mod 40 WDC WD30EZRX-00DC0B0 |
sin wrote: Hi Franc! Thanks for the excellent information. I have never seen any one who is so proficient, humble and sharing in my life. Thanks for holding my hand here. It has been 10 years + i have worked on so many WDs but never ever did the 40 reworkings. Sent you a PM. no no..all is done....it worked out great! i wanted to PM about something else that I really wont discuss on the forum (any part of it) How do I email you then? Just send me your email address some how so that I can express something to you totally in person. -- PS: T-list had checksum errors. Even after fixing checksum the drive would go into err abt. Clearing it gave data access..But not perfectly as with some diablo 3D/3S drives there is sector misalignment post clearing T-Lists. So now next mission is to try to fix the Tlist so we have boot sector seen on LBA0. Other wise Raw data is available. This drive was gone into some US lab. I sense some misdoings on it as client declined to pay. |
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| Author: | fzabkar [ March 12th, 2026, 3:51 ] |
| Post subject: | Re: Mod 40 WDC WD30EZRX-00DC0B0 |
I don't wish to share anyone's secrets, primarily because it creates a dilemma if I were to later uncover those same secrets from a different source, or through my own research. As for mod 0x40, I understand the structure (that's trivial), but I don't understand the content. In that regard it would be best to consult with your peers. |
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| Author: | sin [ March 12th, 2026, 12:12 ] |
| Post subject: | Re: Mod 40 WDC WD30EZRX-00DC0B0 |
sure. But the email part was not about DR or tech. Just wanted to mail you and keep that thing off the forum records. Public or PM. Secretes can get buried with their graves who keep them. I care very less. -- |
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