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by ddrecovery
Wed May 23, 2018 12:55 pm
Forum: HGST / Hitachi Data Recovery
Topic: HTS547575A9E384 IBM-ARM Corrupt NV-RAM
Replies: 14
Views: 1910

HTS547575A9E384 IBM-ARM Corrupt NV-RAM

Looks lie the full size ROM is the correct ROM at the FW is 5BB. Not sure what happened to the shortened version. It may be that the ROM is corrupt as the board was burnt out when it arrived. I will look at which ROM is on the drive now. Thanks for the help.
by ddrecovery
Wed May 23, 2018 11:52 am
Forum: HGST / Hitachi Data Recovery
Topic: HTS547575A9E384 IBM-ARM Corrupt NV-RAM
Replies: 14
Views: 1910

HTS547575A9E384 IBM-ARM Corrupt NV-RAM

As i know, PC3000 has a bug that does only 50% ROM backup from Hitachi ARM drives, also MRT has this same bug. I don't know if acelab corrected this bug in last update, maybe yes and this would give a sense on why now you get full rom dump if you recently updated it. I compared both NVRAM copies in...
by ddrecovery
Tue May 22, 2018 6:34 pm
Forum: HGST / Hitachi Data Recovery
Topic: HTS547575A9E384 IBM-ARM Corrupt NV-RAM
Replies: 14
Views: 1910

HTS547575A9E384 IBM-ARM Corrupt NV-RAM

The strange thing about this ROM is that PC3000 read it as 512kb, but most ROM's for this family are 256kb. I have attached (and have tried both sizes) on the drive but it still will not spin.

Many thanks for your help.
by ddrecovery
Mon May 21, 2018 12:40 pm
Forum: HGST / Hitachi Data Recovery
Topic: HTS547575A9E384 IBM-ARM Corrupt NV-RAM
Replies: 14
Views: 1910

HTS547575A9E384 IBM-ARM Corrupt NV-RAM

Many thanks for the kind offer. I have attached the NV-RAM. Let me know if you need any additional information.

NV-RAM.7z
(2.3 KiB) Downloaded 69 times
by ddrecovery
Fri May 11, 2018 10:15 pm
Forum: HGST / Hitachi Data Recovery
Topic: HTS547575A9E384 IBM-ARM Corrupt NV-RAM
Replies: 14
Views: 1910

HTS547575A9E384 IBM-ARM Corrupt NV-RAM

Initially I physically swapped the NV-RAM as the original board was damaged. Took a copy of the NV-RAM after installation. Now have tried a couple of donor board by transferring the data through software. Same result.
by ddrecovery
Fri May 11, 2018 12:47 pm
Forum: HGST / Hitachi Data Recovery
Topic: HTS547575A9E384 IBM-ARM Corrupt NV-RAM
Replies: 14
Views: 1910

HTS547575A9E384 IBM-ARM Corrupt NV-RAM

Yes. Regardless of which heads are on/off it does not spin on the patient drive.
by ddrecovery
Thu May 10, 2018 5:34 pm
Forum: HGST / Hitachi Data Recovery
Topic: HTS547575A9E384 IBM-ARM Corrupt NV-RAM
Replies: 14
Views: 1910

HTS547575A9E384 IBM-ARM Corrupt NV-RAM

This drive came to me with PCB failure (burnt components). NV-RAM at first appeared to be okay as I can read ID, mu-code, Heads, Head Map and SN. However when installed on the drive it will not spin (also changed heads in case of preamp issues). Patient drive will spin with different NV-RAM, Patient...
by ddrecovery
Wed Apr 25, 2018 1:27 pm
Forum: General Discussion & Off Topic
Topic: Data Recovery Companies List by Country and Capabilities
Replies: 25
Views: 8221

Data Recovery Companies List by Country and Capabilities

Desert Data Recovery - Phoenix AZ
2 x PC-3000
PC-3000 SSD
PC-3000 Flash
VNR
Class 10 Cleanroom
iPhone logic board recoveries
RAID's
by ddrecovery
Wed Apr 25, 2018 1:15 pm
Forum: Logical Data Recovery & Data Recovery Software
Topic: R-Studio now covers APFS with Encryption
Replies: 5
Views: 1316

R-Studio now covers APFS with Encryption

New features:
* Support has been added for APFS (including encryption), a new Apple file system introduced in macOS High Sierra.
by ddrecovery
Mon Apr 23, 2018 11:53 am
Forum: Hard Drive Data Recovery
Topic: Cleaning HDD Heads & Platters
Replies: 92
Views: 18327

Cleaning HDD Heads & Platters

The heads I used were the original from the failed drive. As this platter already had a score in it and was written off by the client I thought it would be a good experiment.

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