Hard Drive Recovery (Partitions visible but not accessible and size not seen)

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Radoslaw Kedzior

Honorable
Jan 11, 2014
3
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10,510
Hi,

I have problem with my HDD that is not able to properly boot Win7 installed on it. It throws bug check 0x0000007B which is INACCESSIBLE_BOOT_DEVICE in Windows nomenclature.

When I connect it via SATA->USB windows sees 3 partitions:
1. PQSERVICE which is recovery partition with proper size
2. Not labelled partition (used to be system partition)
3. Not labelled parition (used to be partition for data storage)

What steps I should take to detect what is the reason and maybe get the data back out of it ?

Thanks in advance for help and suggestions.
Radek
 
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R

Radoslaw Kedzior

Honorable
Jan 11, 2014
3
0
10,510
I used TestDisk from http://www.cgsecurity.org/wiki/TestDisk. It first tests for disks and partitions and IOCTL's sent to kernel return proper partition sizes as I got something like that in the log:
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\G: )=13958643712
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\H: )=58011418624
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\I: )=166308114432

I get messages that HDD cannot be accessed but most probably the communication with the HDD FW is functional as it returns its logical structure and partition sizes.
I have the impression that the head is somehow stuck and cannot move to the requested block.
 
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