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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