jinxy said:
The way you diagnose this is to disconnect or disable all but the
Tried that, all works fine untill you get to the hdd. Have also
changed the sata cable on the drive, still no joy. Man this is a
really compacted tower, everything is tight in there, not much room to
work. I will ask him if they have recovery disks that came with the
pc.
I will do a non-destructive recovery if he has the disks. While I am
waiting I will take the drive out and slave it to another pc.
-J
I'd boot a Linux Live CD, and try to copy the old disk to a new disk.
The "dd" command can do this in one shot. All it requires, is the
new disk be slightly bigger than the old disk. Since the "dd" command
does a sector by sector copy, it places the least stress on a failing
disk.
The Linux Live CD, doesn't install any software. It only requires
the CD/DVD drive be in working order. I can use such a CD as a test
of the computer hardware. If the CD won't boot to completion, I could
then start disconnecting other hardware bits and pieces, and look for
a change in symptoms.
Examples of Linux Live CDs, are Knoppix (knopper.net) and Ubuntu (ubuntu.com).
If the disk is damaged (has bad sectors), there is a procedure for
that. The "ddrescue" at the bottom of this page, has the ability to
skip over sectors that cannot be read, and preserves the maximum amount
of information from the original disk. (The regular "dd" would run slowly,
or fail completely, on a disk with errors on it.) Once you've made
your best copy of the drive, you can then attempt data recovery,
run chkdsk or whatever, on the *copy* you've made.
http://www.cgsecurity.org/wiki/Damaged_Hard_Disk
The only thing that techniques like that can't help with, is environments
that use an HPA. I think perhaps Dell Mediadirect might be an example. There
is some box, that hides one of their pieces of software, in a normally
inaccessible place. If working on a hard disk set up that way, you need
to find a web site specific to the situation. This site, for example, has
info useful to people working on certain Dell boxes.
http://www.goodells.net/dellrestore/recover.htm
The hard drive manufacturer may provide a utility for testing the disk.
On Seagate, I use Seatools for DOS, downloaded from their web site. That
gives me a bootable floppy diskette, which can test Seagate drives. Some
disk manufacturers, provide no help whatsoever. It comes as a shock, when
you visit such a manufacturer web site, and there is nothing you can use
for testing.
So if I was visiting a friend's house, I'd probably bring along three
of my spare hard drives with me. Just in case. And my stack of Linux
CDs. And Windows installer CD, so I'd have a Recovery Console to work
with.
While I've never bothered to download this, this recovery disc can be
used to work on Win7 systems, but can apparently also be used to work
on things like WinXP.
http://neosmart.net/blog/2009/windows-7-system-repair-discs/
So there are plenty of things you can boot with, to do work
on a computer.
Paul