How to resize an Ubuntu disk on Hyper-V?

Question

ubuntu

Hello!
There is only one disk in the system. I increased it by means of Hyper-V by 50 Gb. Downloaded gparted
I'm trying to boot from it to resize the disk, but the download fails.
Almost any choice in the gparted menu gives the same thing:
And each line appears with a very long wait. 10 minutes each.

I loaded the system to see what it sees - what it doesn't and is generally confused.
Writes that the disk is 215Gb - i.e. it turns out that it is increased (because it was created by 150 and then added 50 to Hyper-V)
And these 50Gb are nowhere to be seen in the partitions

Answer 1

Well, it looks like gparted doesn't pick up the disk controller used in the VM.