Mounting Linux virtual hard disks with VHDMount

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If you use Linux under Virtual Server / Virtual PC - you may be interested to know that the new VHDMount tool gives you an easy way to transfer data to and from your Linux virtual machine.  Normally if you tried to use VHDMount to attach a Linux virtual hard disk to Windows - it would fail to recognize any of the partitions on the virtual hard disk.

However - there is a project on SourceForge that allows you to access Ext2 partitions from Windows.  Now - you may be thinking 'But I use Ext3!!' - well never fear.  Ext3 is backward compatible with Ext2, which means that these partitions will work (you just won't get the journaling features of Ext3 while accessing the disk from Windows).

After installing this program you can mount a virtual hard disk, and then use the Ext2 volume manager tool to assign drive letters to the virtual hard disk.

This all works perfectly on Windows XP / Windows Server 2003 - but I found it a bit problematic on Windows Vista.

If you are running 64-bit Windows Vista (like me) you will need to enable 'test signing' in order for this tool to work.  You can do this by opening an administrative command prompt and running:

Bcdedit.exe -set TESTSIGNING ON

Also, on Vista you need to launch the Ext2 volume manager tool 'as administrator' in order for it to work properly.  Finally - once a drive letter has been assigned - it will only be accessible from administrative command prompts (not from explorer).  While this makes it a bit painful - it is still quite useful.


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  • If this is the same ext2 driver I use, the control panel should automatically prompt for elevation (Vista automatically recognizes it needs to be elevated).  Either that or it doesn't work and Vista asks you if you want to elevate it in the future.

    Only problem with ext2 is that Windows has the annoying tendency to create a "Recycled" folder... and the Recycle Bin can't be disabled for the drive.

  • What about this ext file sys:

  • How about reading reiserfs drives? Has anyone tested that out there?

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Mounting Linux virtual hard disks with VHDMount