# DiskExt - Sysinternals | Microsoft Learn

Title: DiskExt v1.2 Author: Mark Russinovich Published: July 4, 2016 Last updated: 03/23/2021

Summary:

* DiskExt is a Sysinternals utility that demonstrates the use of the IOCTL\_VOLUME\_GET\_VOLUME\_DISK\_EXTENTS control code.
* The tool obtains information about which physical disks contain the partitions of a volume and the locations of those partitions on the disks (useful for multipartition or multi-disk scenarios).
* A downloadable binary is provided: <https://download.sysinternals.com/files/DiskExt.zip> (498 KB).

Related resource:

* Training module: Maintain disks and volumes — <https://learn.microsoft.com/en-us/training/modules/maintain-disks-volumes/?source=recommendations>

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