Re: USB backup does not show up in 'Startup Disk'

In article <1jl89rm.1fo7qqz1icvuu6N%dempson@xxxxxxxxxxxxx>,
dempson@xxxxxxxxxxxxx (David Empson) wrote:

....
In article <dorayme-EB9146.17271406072010@xxxxxxxxxxxxxxxxx>, dorayme
<dorayme@xxxxxxxxxxxxxxx> wrote:

Wonder why the
thing did not show up when started from the regular internal
drive (even after a complete restart from internal to internal
with USB connected and powered on still)?


The computer may be able to boot from that partition map scheme, but
System Preferences may not let you select it as the configured startup
disk if it is not the expected scheme.

For an Intel Mac, the partition map scheme should be "GUID Partition
Table". (Intel Macs to date can also boot from Apple Partition Map, but
there are some limitations such as not being able to install firmware
updates, and the Mac OS X installer won't let you install it on a drive
with this scheme using an Intel Mac. At some point, future models are
likely to drop support for booting from Apple Partition Map.)

Ah, *thanks*, yes, that is likely it! I was not watching that
when I bought the thing (from a general computer store, it was
'Master Boot Record' btw) and partitioned it at the time.

I repartitioned it just now and made sure to set the map right. I
am backing up the Macbook internal to one of the partitions right
now so you will only hear from me if it fails to show up as a
possible start up in Disk Utility.

It is nice when there is a reason for something! Does this mean
there is or there is not a god? <g>

--
dorayme
.

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