How to recover a virtual disk?

Question

Hyper-V

Windows server 2012 r2, there are 4 virtual machines, all disks of which are located on one physical HDD with one partition (500GB).
One of the virtual machines (srv 2012 r2) with the name IT began to slow down severely, there were problems with the disk in the logs. Until all the others fell down, I transferred their disks to another place without problems by regular copying, but the IT disk does not want to. The problem with copying constantly occurs at 70-80 GB of copying. Disk dynamic 200GB, occupied by 120.
-Tried to just copy.
-I took out a physical disk, tried to copy this file from under ubuntu - the same thing.
-Tried to start the virtual machine and make an archiving - the same song - a failure on 88GB.
-I checked the physical disk for bad blocks, there were only 4.
-I tried to convert it to a disk with a fixed size
-I tried to export the virtual machine - everything ends at about the same moment.
Tell me, what other ways are there so as not to lose what you have acquired?

Answer 1

Use backups, Luke! Otherwise, such situations will be repeated more than once, and not twice.
As for the broken screw - look for some software and try to make a full sector-by-sector image of the disk, mount this image and try to pull files out of it already. On Linux or Fra, you can try to remove this image using dd.

Answer 2

The insult is that backups were made, but the fact that the backup of this particular virtual machine stopped being done a month ago due to bad sectors, I noticed late. A backup of a month ago is not relevant to me.