Have you even tried it?

It's a GUI front-end for built-in functionality, and it's been created by idiot(s).

It might work, but I'm not seeing any compelling reasons to use it over either RoboCopy or Acronis True Image?

The job could've been well on the way by now. It works, it's easy to use. Just use it.

Well, I dunno. Why not just format the new partition(s) and copy the files across in the usual way then. Why the need to clone, exactly?

For mirroring a volume, the basic syntax would be:

robocopy [source] [dest] /MIR

This will copy everything from [source] to [dest] while also deleting everything from [dest] that doesn't exist on [source].

If you omit the /MIR option it will copy files only and not delete anything from [dest].

If either the source or destination partitions are FAT32 or network shares (especially if they're Linux SAMBA shares) you will also need to add /FFT to the end of the command above otherwise every time you re-run robocopy it'll think the files on the source drive are newer and copy them again.

Other options that might be useful are /XD and /XF which ignore directories and files respectively. Depending on your user credentials, you might need these for ignoring the "System Volume Information" folder and "$Recycle.Bin".

So a full command might look like:

robocopy [source] [dest] /MIR /FFT /XD "System Volume Information" /XD "$RECYCLE.BIN"

All you really need to do is make sure you don't get [source] and [dest] the wrong way around :)

Thanks, though I went and read up on it anyway.

I went with /E to copy the directories as well, and not risk deleting from dest (even though it was empty anyway, I was paranoid about getting the source/dest the wrong way round).

That /XD would have been useful - fortunately I found something that said use /R:10 to limit the number of retries, otherwise it would have been stuck on the System Volume Information forever, instead of just five minutes. :(

( Why on earth did they implement "default 1 million" combined with a default retry wait time of 30 seconds!? That would have meant nearly a whole year trying? :? )

Anyhow, everything all swapped around now. :)

Fortunately the disk I wanted to change was in the [relatively] easy access compartment, instead of requiring me to take the whole case off like the other one apparently would require.

Now to re-organise various files I had shunted around back to their logical homes...