According to SMART, a 1TB disk on my desktop is approaching a fail condition.
Currently I have 21 bad sectors, which has been slowly increasing over the last couple of months.
It's about 4 years old.
This disk has both / and /home partitions.

I have a spare 1TB disk (a more recent model), I also have a file level backup of all files on an external disk + a copy of the MBR.

Should I:-
Boot from CD and
a) Connect the new disk to the PC & use the dd command?
or
b) Partition the new disk and do a file level restore?

The new disk claims to use to use 4K hardware sectors, but which appear to software as 512 byte sectors...

If your old disk partitions use the standard layout then they are misaligned for your 512e drive. I would use rsync to copy files.

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