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Aargl Aargl is offline
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Default 08-25-2012, 02:38 PM

Hi! Sorry, I'm just seeing your post!
1. YES! As long as you've got your .dmg you can boot from any partition (internal or external) and restore it to a blank partition (internal or external) I'm not sure if you intended making a backup of the currently running osx but I never did, it may work, but it may not...)
2. Checking ERASE is not copying bad blocks, if that's what you mean: if they do exist, you'll probably have a reading error, no matter what utility you use. If your disk is ok, backing it up without the Erase option may defragment it (they say so...) but will copy every files and folders the way they are, just as with the option ticked.

If you want to optimize your backup, you can use an utility such as Snow Leopard Cache Cleaner to clear your caches before, but you won't gain 1Gb on a fresh system (maybe on an long used system, but you probably don't want to backup it as it will probably have a lot more clutter...)
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