Why is the disk not initialized?

Question

Hard disks

Hello

After trying to change the power settings (by default, the HDD turned off after 20 minutes) to a value of 0 (Which, in theory, should mean that it will not turn off), the disk disappeared from the explorer. And from the disk manager. Returning the power settings back (and rebooting the system) partially corrected the problem
Now the disk is displayed in the manager, but not initialized, and only 128 GB in size
Before that, the disk was displayed in the manager as someone else's (data was restored to it from another HDD) And after the operation, import of foreign disks everything worked. True, after it was displayed with an exclamation mark and the signature Error was still in the same device manager.
Drive Seagate Barracuda 2 TB ST2000DM006, Windows 10 installed on SSD and HDD for files, MBR partition