[DMA]

I was trying to create a backup, SuperDuper got as far as creating a blah.dmg.sparseimage file but the failed trying to create a "read only" (whatever that part is) due to lack of space.

So I'm left with "blah.dmg.sparseimage" - is this a valid backup? Can I attach an external drive with more space then complete the operation with this file or do I have to repeat the whole process?

Thanks!