Here is something that everyone with a Mac and a external drive or
more need to be aware of these days!

Do you have the Leopard running? Do you have a clone backup that is on
an external drive that is older than when you started to use Leopard?
Have you tried starting up from it?

You might not be able to!!!

From Tiger and before, all Apple/Mac drive were partitioned with the
Apple Table partition. As of Leopard, Macs drives are formatted via
GUID Table partition. I can not get my new MacBook Pro to start up
from any of my many older clones that Super Duper backs up to daily!

So what everyone wants to do these days, if you are using Leopard and
are starting fresh with a new hard drive, you want to go into Disk
Utilities and go to the partition section, whether or not you want
partitions, every drive has at least one. You need to change the
partitioning from Apple Table to GUID and then re-partition the new
drive to this format. Then you will never have any problems should you
decide to use this external drive as a clone.

YouÂ’ll have to do this to your older drives eventually too.

Also another thing I have recently found is that I am not able to
chain all my externals together anymore and keep the FireWire bus up
and working. At first we thought this was a problem with the new MBP,
but after much research and troubleshooting we are learning this is
being caused by having too many different types of FireWire chips and
bridges clashing together. I need to get all my drives into as few
enclosures as possible.

Robert
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