[rdiff-backup-users] migrated to new hard drive, now rdiff-backup sees everything as new

[Stan Schymanski]

Dear all,

I installed a new hard drive and used rsync to copy my home directory 
across, but when I first ran rdiff-backup on the new hard drive, it saw 
everything as new and all previously backed-up files as missing. How can 
I make rdiff-backup recognise the moved files as the same as the 
previously backed up ones? I do not want to start over from scratch, 
otherwise I'd lose previous incremental backups.

Thanks for your help!