Go Back   AnandTech Forums > Hardware and Technology > Computer Help

Forums
· Hardware and Technology
· CPUs and Overclocking
· Motherboards
· Video Cards and Graphics
· Memory and Storage
· Power Supplies
· Cases & Cooling
· SFF, Notebooks, Pre-Built/Barebones PCs
· Networking
· Peripherals
· General Hardware
· Highly Technical
· Computer Help
· Home Theater PCs
· Consumer Electronics
· Digital and Video Cameras
· Mobile Devices & Gadgets
· Audio/Video & Home Theater
· Software
· Software for Windows
· All Things Apple
· *nix Software
· Operating Systems
· Programming
· PC Gaming
· Console Gaming
· Distributed Computing
· Security
· Social
· Off Topic
· Politics and News
· Discussion Club
· Love and Relationships
· The Garage
· Health and Fitness
· Merchandise and Shopping
· For Sale/Trade
· Hot Deals
· Free Stuff
· Contests and Sweepstakes
· Black Friday 2013
· Forum Issues
· Technical Forum Issues
· Personal Forum Issues
· Suggestion Box
· Moderator Resources
· Moderator Discussions
   

Reply
 
Thread Tools
Old 03-04-2005, 01:06 AM   #1
TheLizardMan
Senior Member
 
Join Date: Aug 2000
Posts: 881
Default How to repair a corrupt file allocation table?

Whats a good program to repair a corrupt FAT? I need to repair it to get some data off the drive. Then once that is do I will reformate and install windows to make sure that everything is okay.
TheLizardMan is offline   Reply With Quote
Old 03-04-2005, 02:36 AM   #2
ironique
Senior Member
 
Join Date: May 2002
Posts: 498
Default How to repair a corrupt file allocation table?

Is the drive recognized in windows? You tried the good old chkdsk command? chkdsk /r /x [drive].
ironique is offline   Reply With Quote
Old 03-04-2005, 02:44 AM   #3
TheLizardMan
Senior Member
 
Join Date: Aug 2000
Posts: 881
Default How to repair a corrupt file allocation table?

No, it's for a friends computer. I will be checking it out soon.

Now if it is the FAT that is corrupt, giving windows wrong file size information, will chkdsk /r /x fix it? Also, if this fails the drive will be lost for good. So i'd rather try another method first if there is one.

BTW, how would you check to verify that the file allocation table is corrupt in the first place? Right now I'm just taking a guess.

Thanks
TheLizardMan is offline   Reply With Quote
Old 03-04-2005, 09:34 AM   #4
LiLithTecH
Diamond Member
 
Join Date: Jul 2002
Posts: 3,105
Default How to repair a corrupt file allocation table?

What OS?

There are Shareware\Freeware file recovery apps that you can try.

The best Retail File Recovery Program I have found is;

Active@File Recovery for Windows
LiLithTecH is offline   Reply With Quote
Old 03-09-2005, 11:18 AM   #5
HeidiK77
Junior Member
 
Join Date: Mar 2005
Posts: 3
Default How to repair a corrupt file allocation table?

Hi, TheLizardMan, I think I got the same prob as your friend's.
I agree with you on chkdsk;
I havent found any way of checking that it is the fat thats corrupted but the files are stilll on the disk and look corrupt (folders and files are made of odd characters). So far the only options i've found were recover the data via some various proggs (dont know if they work) and format disk...
If you find something plz let me know, I will do the same. Good Luck
HeidiK77 is offline   Reply With Quote
Old 03-09-2005, 11:31 AM   #6
VertigoPariah
Junior Member
 
Join Date: Oct 2001
Posts: 13
Default How to repair a corrupt file allocation table?

I just went through this myself and found a great program to pull the data off the drive. Its not freeware but it does work and it does what it says. Go to www.restorer2000.com.


VertigoPariah is offline   Reply With Quote
Old 03-09-2005, 11:47 AM   #7
HeidiK77
Junior Member
 
Join Date: Mar 2005
Posts: 3
Default How to repair a corrupt file allocation table?

Thanks for the tip VertigoPariah.
Any clue for recovering a corrupt FAT?
ALso, I should had this happened cause i was trying to use a drive over 127/137gb and my Bios cant handle it.
I'm devasted (lost 138gb of data) and I dont know how to get the disk working other than buying new motherboard and format since the latest bios for my current motherboard wont handle such drive size. After all, if i could just get the data back or repair the fat, i dont care too much about the drive, as far as i'm concerned this drive is evil
I read about fat mismatch and being able to recover the fat by replacing it with its backup (as long as checkdisk didnt interfer), only prob is you need to be some kind of guru to perform that...
Another question: can i recover the data using some prog (like restorer2000 or else) with the hdd size not handled by the bios? or do i need to plug the hdd to a motherboard with bios that can handle the size (and 48-bit Logical Block Addressing) then try to recover the files?
Thanx for any feedback, this is not something very well documented on the net (been looking for info for days).
HeidiK77 is offline   Reply With Quote
Old 03-09-2005, 06:07 PM   #8
montag451
Diamond Member
 
Join Date: Dec 2004
Posts: 4,587
Default How to repair a corrupt file allocation table?

Hi.
Apart from plugging the drive into another sys with a mobo that can handle 48bitLBA, another option is to try a Promise ATA card, or maybe even a USB enclosure MIGHT circumvent the problem.
U will have to get the data off, and reformat though.
Drive is not evil, it is the old non48bit mobo that is.



montag451 is offline   Reply With Quote
Old 03-15-2005, 11:15 AM   #9
HeidiK77
Junior Member
 
Join Date: Mar 2005
Posts: 3
Default How to repair a corrupt file allocation table?

Thanx montag451.
How do i go about to recover the data so i have the best chance of succeeding?
Does the system has to be 48bit lba compatible for me to do that or will my old sys be enough to get the data?
If i put the drive in a compatible system, will my data be there as it should?
I read that before putting my drive in a 48bit lba compatible system, I had to remove the DDO (from WD), is it necessary and how will that affect the data on the drive?
Ofc, once the data is saved, I'll reformat and put it in another sys or use a controller card.
I've never had to do something like that before (retrieve data on a big drive with DDO and compatibility problems) and would really appreciate some guidance for newbies...
Thanx a lot
HeidiK77 is offline   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 05:13 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.