Well I had a look at the wiki page - and now I'm less clear about what to do... and to be honest the language of the wiki is a bit above my level of expertise. (On second reading I see what he's doing with the sector alignment, but I'd prefer a simpler method!)
I'm replacing a 1TB disk with another 1 TB disk, albeit a WD one. So I can presumably use the Humax FW to format it initially? I can then reinstall the CFW (Reading the wiki it seemed that the CFW was installed prior to formatting, not sure how that work.... So far so good?
Now, why would I need to get involved with partitioning the disk? Will that not be done by the Humax FW (which is the latest 1.03.06, installed with CFW when I wanted to try fix-disk - which as predicted didn't mange to fix it)?
Anyway, from what Wallace has said, I should be able to 1) Install disk 2) Format 3) Install CFW and 4) run 4kalign** from diagnostics.... and be good to go?
** I assume I enter mainteance mode, type "diag" then at the prompt type "4kalign"?