Error: "The request is not supported" when trying to shrink volume

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Asked 6 years, 3 months ago

Modified 6 years, 3 months ago

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I have Windows 8.1 and when I try to shrink the C: drive I am getting an error (regardless how much amount of space I choose to shrink is)

The error says: The request is not supported.

Here is the screenshot of the error

What could be the reason?

And how can I solve this ?

Thanks.

Tetsujin

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asked Mar 30, 2018 at 9:05

Michael

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You cannot make changes to an active file system. You will need to boot an external diagnostic or installation disc: I would normally use gparted on Ubuntu Live for this. Of course, it goes without saying that you must back up everything before making any partition change - a full disc copy will allow the quickest recovery if anything goes wrong.
– AFH
Commented Mar 30, 2018 at 10:13
It may also be that some files have been written near the end of the C: partition, even though only a fraction of the partition has been used. In that case, when resizing with gparted, MinitTool Partition Wizard or other utility (run from Linux or WinPE media, as @Michael states), you may find limitations on how much the partition can be shrunk.
– DrMoishe Pippik
Commented Mar 30, 2018 at 16:04

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