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So I'm using a 250GB external hard drive with superduper! to create backups. I'm keeping 3 copies and progressively erasing the oldest one to make space for the newer backup copy.

The problem is, my hard drive isn't freeing up space when I erase the previous backup. Let's say I have 100GB available and my backups are 40GB each. I erase the last copy and create a new backup; I should now be at about 100GB again except that when I get the info on my external HD, I'm told that I only have 60GB available as if my old backup copy didn't get erased.

In the past I've remedied this by formatting the drive, but I don't want to have to do that because I obviously don't want to trash all my backups. My HD is formatted in HFS+ with journaling enabled (so that my backup copies can be bootable). Any ideas?
 

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When you move an item to the Trash, it isn't deleted immediately - it remains there until you empty the Trash. This applies to all drives, internal and external, with the exclusion of network drives.
 

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Wow.


:D
 

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You would be better to just partition the external into 3 and roll through them in order using erase in Superduper on the oldest.
SD remembers which drive you backed up to last so you just go to the next one. ) call them One Two and Three.
I do that with two partitions Odd/Even and then have a third backup once a month that is away from the computer on a dedicated drive.
 

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You would be better to just partition the external into 3 and roll through them in order using erase in Superduper on the oldest.
SD remembers which drive you backed up to last so you just go to the next one. ) call them One Two and Three.
I do that with two partitions Odd/Even and then have a third backup once a month that is away from the computer on a dedicated drive.
Similar to my system except I have kept my OS slim enough to do compressed disk images instead of clones. Course I don't have Garage band or iDVD installed but I am keeping my system down to 5.5GB.
 
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