Get your Mac ready for Mountain Lion

The better shape your Mac is in before 10.8 arrives, the better your installation will go

By Dan Frakes, Macworld |  Operating Systems, Macs, Mountain Lion

Make sure your Mac's startup drive is in good health: To do so, open Disk Utility (in
/Applications/Utilities), select your startup drive in the list on the left, click the First Aid tab to the right,
and then click Verify. If Disk Utility finds problems, you'll need to boot from a different volume to perform the
actual repairs using the Repair Disk button. If you're upgrading from Lion and your Mac can use Lion Recovery, you can boot into
recovery mode (by holding down Command+R at startup) and use Disk Utility from there; alternatively, if you created
a bootable Lion-install drive
for older Macs
or for newer
Macs
, or created a separate Lion
Recovery drive
, you can boot from that drive and use Disk Utility. If you're upgrading from Snow Leopard, you
can use Disk Utility when booted from either your Snow Leopard Install DVD or the OS X install DVD or thumb drive
that shipped with your Mac. If you're feeling especially cautious, you can also opt to run Apple Hardware Test.

Back up your Mac, and test that backup: Let me say that again: Back up your Mac, and test that
backup--before installing Mountain Lion. (See our article on Mac backup plans for more
info on backing up your Mac.) I personally recommend creating a bootable-clone backup (using SuperDuper or Carbon Copy Cloner) for the task, although a Time Machine backup
will do, as well. To test a clone or other bootable backup, use the Startup Disk pane of System Preferences to boot
from the backup drive. To test a Time Machine or other non-bootable backup, try restoring several files--both older
ones and newer ones--to make sure you can recover your data should disaster strike.


Originally published on Macworld |  Click here to read the original story.
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