===== Cannot extend drive: 'There is not enough space available on the disk to complete this operation' =====

While trying to extend a dynamic disk formatted in ReFS on Windows Server 2022 or 2019, you might encounter the following error message:
''There is not enough space available on the disk to complete this operation.''


==== Solution ====
To resolve this issue, you can perform the following steps:

  * Go to **Action ▹ Rescan Disks** and try again.

This simple step has been found to work in our case.

{{:rescan_hdd_management.jpg?nolink|}}
==== Additional Notes ====
  - Ensure that all disk operations are performed during a maintenance window to avoid any disruptions.
  - If the problem persists, consider checking for any software updates or patches that might address this issue.

==== References ====
  * https://learn.microsoft.com/en-us/windows-server/storage/disk-management/overview-of-disk-management