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Need Advice Chkdsk changed my drive and files

Ok here goes the problem, I have a computer with XP Pro on it 2 drives are
SATA 250 gig formatted NFTS and they are the boot drives, I also have a 160 gig IDE Maxtor 6Y160PO, that was FAT32 format and a Fujitsu MPB3064ATU 6.1 gig FAT32 drive. The 160 gig drive had 6 years of backups on it (it's a new drive) from my old systems. I was redoing a old system and I removed the 6.1 gig
Fujitsu drive to work on the older system and had changed the jumper to
master. The drive was a bootable 98 drive for the old system. When I reinstalled this drive in my new system I forget switch back the jumper to slave. This drive is on my secondary IDE drives, the SATA drives are my primary boot. I realized my mistake, I shut down the system normally and then changing the jumper to slave. When I rebooted a blue screen came up and Windows file check was running, I couldn't stop it. Now the 160 gig Maxtor is reporting back that it is a 6.1 gig fat32 drive. I have one folder in it named FOUND.000 and files that are named FILE0000.chk to File9999.chk. I called Microsoft and they gave me the canned response you must of shut down your computer wrong.
I work with computer systems all the time, so I'm not a dummy, but
not a programmer. Any ideas how to reverse the process that check disk did,
or recover data on this drive? Any help is appreciated. I downloaded Stellar Phoenix data recovery software to one of my SATA drives and I can see the files are still there, but can't see them with explorer. By the way the BIOS reports the drive is a 160 gig drive.

Avatar of huntersvcs
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Sounds like a problem all right.  When you booted with the 6.1GB HDD as master, WinXP designated it for a chkdsk on the next boot.  Unfortunately, when you switched the jumpers for the 6.1GB HDD back to slave, WinXP didn't know that and basically ran a 6.1GB chkdsk command on your 160GB drive.  Also unfortunately, the FILE0000.chk to FILE9999.chk comment indicates that Windows ran out of numbers before the process was complete.  Whether it stopped when reaching 9999 or just wrote over files is unknown.

Microsoft says:

WARNING: When Chkdsk detects problems with the file system and attempts to repair the damage, data loss can occur. Microsoft does not recommend running Chkdsk with the /f command-line switch unless you have a full backup of your hard disk.

Attempt to repair the damaged file, folder or file system index using Chkdsk. To do so, follow these steps:
1. Click Start, and then click Run.
2. In the Open box, type chkdsk /f <drive>:, where <drive> is the letter of the drive on which the damaged file, folder or file system index exists.
3. Click OK.
NOTE: If the hard disk is large, Chkdsk may take several minutes to several hours to complete.
Chkdsk saves each repaired file in the root folder as a File<nnnn>.chk file, and each repaired folder in the root folder as a Found.<nnn> folder, where <n> is a number.

For information about how to use Chkdsk, click Start, click Help, click the Index tab, type "chkdsk" (without quotation marks), and then double- click the "Chkdsk Command" topic.

Unlike scandisk (which had an undo option) the changes made by chkdsk (according to Microsoft) cannot be reversed!  If the information is valuable enough, I would recommend taking (or sending) your HDD to a professional data recovery firm.
Oops, forgot to mention it:  Try not to use the damaged drive any more.  All so called FREE space given up from the deleted files (even though they are still there) will be overwritten!  And this starts at the very next boot!
Avatar of Al Jee
check out
Steve Gibson's SpinRite has been a mainstay for years and has just been updated to include NTFS systems.
You may well be able to salvage everything on that hard drive and do it at a tenth of the cost [or less] of a data recovery service.
Avatar of srw134

Another good application that has been around for a while that I use to recover drives is R-Studio (, haven't had any problems with it yet and I have recovered several drives from situations like this one.


if you want to recover data from the chk files, use this :                  Chk-mate (fileo1.chk)                              uncheck
Avatar of richh0323


Thank you for all your replies, sorry for not getting back sooner, but work obligations have kept me busy. I have check out the link that you all have posted. GRC replied

SpinRite is not a "file structure re-builder".  It will not find and
recover data that's been lost due to a destroyed FAT or partition
table.  SpinRite's claim to fame is the *preservation* of your drive's data
at the physical sector level, not at the file system level.

r-studio  will not work for me, and the chcek disk recovery programs would be hard to work with. I am trying to recover over 18 gig of information

I have run the Get Data back with limited luck, I can access some files with the trial verision, but 60% of the files it will not recover. So far the best I have seen in recovery programs is Stellar Phoenix. I may be able to recover 90% of the data.

I have tried to run On Track but the program will not run when I try and check the status of files on the drives. I am awaiting replies back from tech support on this. I will keep the fourm informed on my progress. If there are any more suggestion I would  like to explore them.
if you want to recover ; try gilmore :      
The problem with this type of problem is when chkdisk starts correction the drive it change the primary fat tables. I found the secondary fat table still intact, and all data still on the drive. With a system with multiable drives I was able to keep this drive isolated and not write any more files to it. I found that most software wouldn't help recover files due to SATA ,Raid, or SCSI interface. I am running SATA with a Raid configuration. The way I was able to correct the problem is I used Stellar Phoenix software, and this was able to recover all files on the corrupted drive to a spare drive. I would recommend this software to anyone who needs to recover data, deleted, formatted or unreadable due to problems with fat table damage. I don't usually plug products, but this one is worth the praise, after weeks of working with support from other data experts, this is the one that will work in most circumstances.

While the author of this thread has seems to say that he/she/it has solved the problem on his/her/its own... the fact remains that a comment was added to this question in a lot less than 21 days. <2 days, actually>.

My objection is that I have to commute 80 miles a day [round trip] to work to be able to make mistakes like this.


itz just not fair.
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