Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
June 14th, 2017, 9:00
i have a hdd that crashed and i sent it to commercial recovery. The recovery team has the encryption key to decrypt it.
the feedback i got was
We are currently still trying to recover your data, head 0 is giving us a bit of a headache.
Tech report:
Transplanted heads. Made SA backup. 1x NTFS partition, it is encrypted.
Transplanted heads 3 times, but head 0 dies after a while.
Mirror finished with 2.3M sectors not read (head0).
What does this mean? is the drive busted?
June 14th, 2017, 18:27
2.3 million sectors unread is not a huge number on most modern drives. A 1Tb drive has around 2 Billion sectors total. So it sounds like they recovered a majority of the data. I'd ask them for a listing of the files with bad/unread sectors.
Unless of course those bad/unread sectors contain the disk encryption key, in which case you are definitely screwed.
June 15th, 2017, 3:58
Mirror finished with 2.3M sectors not read (head0).
What does this mean? is the drive busted?
Drive stores your data on magnetic platters, where the smallest portion of data that drive operates is a sector (4096 bits). Modern drives consist of a millions and billions sectors. So, in your case you've lost some part of disk (data). Actually, 2,3M sectors it is not too much, if there was a serious mechanical problem. It is better if all unsuccessful sectors are located in one region, in this case more data will survive.
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