Inserting 2 hard drives with the same partition letters and names on the same PC?

Question

Hard disks

What if there are 2 partitions on 2 disks with the letters C and D and the names Disk C / D, then what will happen to them if we connect them to one PC?

Answer 1

Windows will reassign the letters so they don't match.

Answer 2

Inserting 2 hard drives with the same partition letters and names on the same PC?

When mounted, the volumes will be assigned free letters.

What if there are 2 partitions on 2 disks with the letters C and D and the names Disk C / D,

This doesn't happen. Sections have no letter or title, only size.
Windows assigns letters to volumes when mounted, for order. This is an exclusive feature of the OS that has nothing to do with the disk or the partitions of this disk.

Answer 3

PARTUUID / UUID partitions will be different anyway. Assign letters to unknown partitions from free ones.
The database of known keys is stored in the registry keyHKEY_LOCAL_MACHINE\SYSTEM\MountedDevices

Answer 4

Nothing
Always either reassigns letters
Or does not give a letter and you have to manually set it in the disk manager