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  Forum  Discussions  General  Extending a VHD file and partitions
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New Post 7/3/2014 3:45 PM
119 posts
10th Level Poster

Extending a VHD file and partitions 

Shut down the VPC and copy the VHD file to a Windows 7/2008 R2 or later machine.

Here open up a command prompt and type the following:

select vdisk file="path\to\file"
expand vdisk maximum=16384

Replacing path\to\file with the appropriate path to the VHD file and maximum=16384 with the new maximum size you want it to be in MB.

Exit from diskpart and the VHD files maximum size will have been expanded.

If you only have one partition on the disk then you can open it back up in diskpart and extend the partition:

select vdisk file="path\to\file"
attach vdisk
list volume
select volume=<vol no>

This will extend it to the new size.  You can use 'extend size=x' to extend it by x MB instead of taking the whole extension.

If you have multiple partitions on the disk this will only work for the last partition on the disk.

This was my case.  I downloaded SysRescueCD (, and booted into that in a virtual with the disk attached.  I then used gparted to move and resize the partitions in the vhd.
This worked, but all of the partitions except for C: had their drive letter changed and once I booted back into the real VM I had to reassign the correct original drive letters.


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