Extend a volume in Windows Server with diskpart
Last updated on: 2020-05-12
Authored by: Karoline Mills
This article describes how to extend a volume in Windows Server® 2008 R2, 2012 R2,
and 2016 with diskpart. It also explains the difference between extending and shrinking
or partitioning a volume.
Extending
Extending a volume increases the size of an already existing partition. You can do this only if unallocated space is available.
To extend a volume, you can either use the built-in disk management tool or the command-line
tool diskpart. Keep in mind that you need administrator permissions to perform these tasks.
Extending by using diskpart
To extend a volume by using the diskpart command-line tool, use the following steps. The code uses
the C:\ drive (disk 0) as an example.
-
To open the command-line prompt, click the Start button and type cmd.
-
To start the
diskpartutility, type diskpart. -
To view the current disk information, enter list disk.
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To select the disk you want to extend, enter select disk 0.
-
To view the volume information, enter list vol.
-
To select the desired volume, enter select vol 0.
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To extend the volume to the maximum available size, enter extend.
You can specify the amount of space to add to the volume in megabytes by typing extend size=1000, which adds 1000 MB to the existing volume.
-
To verify the new volume size, enter list vol.
