Re: ruined partition. Can data be recovered?

ray wrote: 
On Fri, 27 Jan 2006 16:51:14 +0000, Leo (Bing) Whiteway wrote:


ray wrote:

On Fri, 27 Jan 2006 07:19:35 +0000, Leo (Bing) Whiteway wrote:



My system is AMD 1600 XP with 512 megs ram, a 200 gig ide hard drive, an Aopen dvd/cd/rw and a D-link router/adsl modem.

I have been having troubles with my hard drive or cables or motherboard.
The problems with my hard drive were I was getting dma errors and often the drive could not be found by the bios.I replaced the 80 wire cable 6 times with no reliable results. I have now installed a 40 wire cable and it seems more reliable.

In trying to fix my problem I have somehow made a partition unreadable.

It is a spare partition that I was saving data to. I have only partially saved one dvd of data but the drive had 18 gigs and I would really like to restore it or maybe get the data back. 

<snip>

 > I have recovered partitions from a disk with a corrupted partition table

and bad block errors. I did:

1) ran sfdisk to identify the offsets and sizes of the partitions
2) used dd to save data to a file, using offsets to get to the partitions
and sizes to capture the whole partition. Also used conv=noerror to keep
it from stopping on error and conv=sync to fill in bad blocks with nulls.
3) loop mount the file to which I captured the data.

At this point, you can fsck the loop mounted file and recover data.
My experience was with reiser partitions and reiserfsck reported back no
errors on the loop mounted file system.

I wish I knew what you mean. I have always printed my partition table so I know the sizes etc. I will have to read about dd etc. and loop mount.
Are you saying that reiserfs is more repairable?
Thank you. 


on that other message, of course, it would be /dev/hda. You may also be
able to get it from /dev/hda20 with no offset or count if the partition
table shows ok. I'd really recommend finding out what is the basic problem
with the disk before you proceed.

Well! I have been having problems for some time with my hard drives. I gave up on my Maxtor 80 gig and bought a new drive. 200 gig Seagate. It worked well for about 3 weeks and then it started having the same problems as the 80 gig. I googled around and tried a new 80 wire cable and all seemed ok for a bit. I bought a new cable and again it was ok for a while. I bought 4 more new 80 wire cables and tried them all. All showed the same dma errors. It was most noticeable if I had a second drive in the computer. I finally ended up with the partition hda20 errors. Finally I have changed the 80 wire cable to a 40 wire cable. I have now installed the "supposedly defective 80 gig hd" and with it on ide1 along with the dvd, their are no more errors. I found that almost all the data I had lost on hda20 was on the 80 gig drive. I am using the 80 gig Maxtor as my back-up and I will be saving it's data to dvd's often. I am now suspicious of my motherboard. It is an Asus A7V8X and I have heard no bad things about them but the suspicion stands. I will give up on recovering my data as I tried all I could and still no recovered data. I will run things like they are for a while and see if the problems I have had with the drives shows it's ugly head again before I make a decision re the motherboard.
Thanks to all who answered my query.


--
Leo in Canada:
A computer without Microsoft is like a chocolate cake without mustard.
< running Linux > http://www.linux-bc.com
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