My first thought: is this repeatable? Meaning, can windows see it
every time and linux can't? Or did he just get lucky and the drive
happened to load correctly that time? Are you sure the bios didn't
detect it? I have a personal drive that is like that... on most
starts it will just click and not be recognized in bios (or any op
system including windows). But sometimes it would get something just
right and be recognized (think the "firmware" that is stored on a
special part of the drive had read problems). When it was recognized
it would work just fine with no errors, until the next boot and then
it would be hell to get back again. But I don't see any way that
windows could see any hard drive that was not available to the
bios... unless it caused the drive to restart again after booting
and luck was involved. So I ask again, is this repeatable?
On 6/25/2013 7:56 PM, Seth Baker wrote:
I thought recovery
was not recoverable through software means if the BIOS
doesn't detect the drive, but it turns out not always
true. At my work, an executive secretary kept important
files on a drive that stopped booting. I have been a
computer technician for 15 years and used ddrescue for 5
years. I could not find a way to recover anything on the
drive. One of the executives wanted to try recovering data
after I explained all the things I tried This is a man
who has no formal IT experience, except he told me he has
been tinkering with computers for the last 40 years. So he
plugs the drive into sata port and boot up the computer
and the drive starts clicking and I see that it not
detected in the BIOS. After Windows 7 boots up, he goes to
"Computer" and the drive is there. After I pick up my jaw
that has just landed on the floor, I start coping over
important files. They copy at 3 MB/s which I guess means
it is doing it over PIO mode 0, but they all copy
successfully. How does Windows access this drive without
BIOS detection? Can I do the same with Linux with RAW
option or another option in ddrescue? The disk won't show
up as a /dev/sdX device in Linux. Any ideas?
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