|
I've seen issues like this when a hard drive is starting to fail and the OS tries to map out the failing blocks. It makes for a massive hit on the system.
Run a disk check against both the source and destination drives.
Also check it's plugged in correctly and try another USB socket for the external drive.
Disks are very fragile and not made to last anymore. The warranties show that by now offering a 2 or 3 year one these days. And the new one may be a bad one
(Says he with 30 odd years of large systems experience)
|