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Windows 7: Unmountable Boot Volume


12 Apr 2010   #1

windows 7
 
 
Unmountable Boot Volume

just did a clean reinstall of windows 7 on my laptop... was working good until i shut it off and turned it back on later. Got a blue screen of death with "unmountable boot volume" error and i cant reinstall os or even start it up on safe mode. Can't even get to any of the repair options offered in the boot menu b/c everytime i select anything it goes to "windows is loading files" and gets stuck

My System SpecsSystem Spec
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12 Apr 2010   #2

W7 Ult. x64 | OS X
 
 

I use Ultimate Boot CD for problems like this. I'd just check for drive errors and then wipe the entire drive, that is if you can.

Ultimate Boot CD - Overview
My System SpecsSystem Spec
13 Apr 2010   #3

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

"Unmountable boot volume" error means the OS cannot boot from the hdd either because the boot files are corrupter or the hdd is going bad or connector/cable problems. Reformatting the drive should be your last option, before doing that you should do a CHKDSK followed by an MBR fix.

1) Boot from your Windows 7 install dvd, choose startup recovery options, then get into command prompt. If you dont have an install dvd or it isnt able to get you into recovery, download a Windows 7 recovery disk from Download Windows 7 System Recovery Discs — The NeoSmart Files and use that. Now, perform a scan on the drive letter of your choice by running "chkdsk x:" where x is your drive letter. The manual scan options are:
  • /F Fixes errors on the disk.
  • /V On FAT/FAT32: Displays the full path and name of every file on the disk. On NTFS: Displays cleanup messages if any.
  • /R Locates bad sectors and recovers readable information (implies /F).
  • /L:size NTFS only: Changes the log file size to the specified number of kilobytes. If size is not specified, displays current size.
  • /X Forces the volume to dismount first if necessary. All opened handles to the volume would then be invalid (implies /F).
  • /I NTFS only: Performs a less vigorous check of index entries.
  • /C NTFS only: Skips checking of cycles within the folder structure.
  • /B NTFS only: Re-evaluates bad clusters on the volume (implies /R)
"CHKDSK x: /F /R" would perform a full scan (including bad sectors) and attempt to fix them.


2) Follow up the CHKDSK with a boot sector fix. At the CMD prompt, enter "Bootrec.exe /FixMBR" (without the quotes), then hit Enter. After it is complete, reboot your computer.
My System SpecsSystem Spec
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 Unmountable Boot Volume




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