CmdID

CmdID / Commands

extend

Extends the volume or partition with focus and its file system into free (unallocated) space on a disk. Windows commands reference

On Windows

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Windows

from the Windows commands reference, CC BY 4.0
extend [size=<n>] [disk=<n>] [noerr]
extend filesystem [noerr]

To extend the volume or partition with focus by 500 megabytes, on disk 3, type

extend size=500 disk=3Identify

To extend the file system of a volume after it was extended, type

extend filesystemIdentify
size=<n>Specifies the amount of space in megabytes (MB) to add to the current volume or partition. If no size is given, all of the contiguous free space that is available on the disk is used.
disk=<n>Specifies the disk on which the volume or partition is extended. If no disk is specified, the volume or partition is extended on the current disk.
filesystemExtends the file system of the volume with focus. For use only on disks where the file system was not extended with the volume.
noerrFor scripting only. When an error is encountered, DiskPart continues to process commands as if the error did not occur. Without this parameter, an error causes DiskPart to exit with an error code.