Resuming back does not work.
I am attempting to back up my computer via Time Machine to an external HDD, when I do so it takes a long time to backup 500GB over USB2, about 20hrs and I can't be away from my computer that long. The problem is that if I stop it before it's finished it won't resume, it just say's it's working for a long time and I give up, all night and through to the morning in one case, so what am I doing wrong?
It can't be very much as it's a pretty simple UI, not many options to mess up.
It will back up but I have to format the HDD each time and begin from scratch, obviously not something want to have to do every time I want to back up.
Thanks.
MacBook (13-inch Late 2007), Mac OS X (10.7.3), 4GB 667 MHz DDR2 SDRAM