unmountable boot volume: chkdsk doesnt work!! - Techist - Tech Forum

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Old 06-20-2005, 05:38 AM   #1 (permalink)
Newb Techie
Join Date: Jun 2005
Posts: 1
Default unmountable boot volume: chkdsk doesnt work!!

please advise.

ive downloaded the 6 floppys to get into the recovery console.

followed the instrctions to: chkdsk /r

pc then states: AUTOCHK.EXE could not be located in either the startup directory or the cd rom drive.

type the full path (including drive letter for the location of autochk.exe

ive also tried: FIXBOOT

leejay23 is offline  
Old 06-20-2005, 07:05 AM   #2 (permalink)
Junior Techie
Join Date: Aug 2004
Posts: 81

Greetings Individual.
Attempt this procedure:


followed by


Restart your computer afterwards.

Enter without quotes.
MBR = Master Boot Record

P.S. We are not responsible for any damage or error that might occur as a (in)direct result of you or anyone else following our advices.

The Borg is offline  
Old 06-20-2005, 08:50 AM   #3 (permalink)
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Join Date: Jun 2004
Location: London, UK
Posts: 2,578
Default Re:

Wait wait...you need to do a successful CHKDSK first on the volume you are attempting to boot into...!

UNMOUNTABLE_BOOT_VOLUME is almost always caused by damaged sectors on the Hard Drive. You should always perform a CHKDSK first before anything else.

AUTOCHK.EXE cannot be found because you aren't booting into the recovery console using the Windows XP Setup Disc (which is where the file AUTOCHK.EXE can be found), meaning the vital file needed to do a CHKDSK successfully is not available.

You need to manually locate the AUTOCHK.EXE file in order to do a successful CHKDSK. You can check to see if there is a copy on your PC, or just simply get hold of it. I've taken the liberty of obtaining the file:


Simply click on the link above to download it, save it onto a floppy disk (it is only 500KB or so). Boot into recovery using your floppy disks, perform a CHKDSK x: /R and when prompted to, insert the floppy disk containing the AUTOCHK.EXE file and enter the location. Then let your PC do the rest...!

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