"not enough free space" when there's over 100GB

See Relocate iOS device backups for a way to move the backup data off the system drive (which is still the one checked for free space). Review the rest of the Make a split library portable user tip for advice on organizing the library on external storage.

A recent change to the forum software has messed up the formatting of the user tip somewhat. The terminal command should look like this:

ln -s "/Volumes/<New Volume>/MobileSync/Backup" "/Users/<User>/Library/Application Support/MobileSync"

Where <New Volume> is the name of the volume you want to store the data on, and <User> is the name of your profile. If there are spaces in the path wrap with quotes or escape with backslash. It is probably easier to type in ln -s then drag and drop the two folders onto the command line in turn.

tt2

A possible explanation is that the routine that checks the free space is, for example, only looking at 16 bits from a 32 bit value and is thus not reading the free space correctly. Paradoxically adding some more content to the drive rather than freeing up the suggested amount might work, but I don't know how much you would have to add to fix it.

tt2

Cool.

tt2