HD Install :: Question about extra partitions

I'd like to store backup files from my wife's PC on my frugal install PC. If I put these in /home/dsl, then I have to wait for all of this to be backed up and restored each boot. If I re-partition the drive and add another partition and only mount it when I do a backup, will this work? Seems like it should.

I went ahead and did it, creating partition /dev/hda4 and using this for backups. This seems to work great, as I don't get the shutdown & boot delay if I put these into /home/dsl.

original here.