Old hard drive seen as allocated space
I have an old trusty 20.04 system and it's time to grow into a bigger machine.
The new machine is all set up with fresh 20.04 and bigger drives.
Everything looks good.
So I bought a SATA/USB dock, pulled out my old hard drive, put it in the dock, and connected to my new system.
I expected the new system to just "see" it and it does (as dev/sdd), but as all "unallocated space".
I didn't want to risk doing something to the drive/partition table so I pulled it out and put it back in my old system.
Works fine there. (PHEW!!!) Everything is ext4 and I've got about 6 terabytes of data to move.
Any suggestions? Copying across my home network is estimated at 165 hours.