Format? Your drive should already be formatted. The first backup will
take quite a while as Time Machine will be copying pretty much the
entire contents of your hard drive to the external drive. USB is also
much slower than Firewire so that will contribute to dragging out the
first backup process. Most of the stats I've seen for USB2 show
throughput pegging at about 10MB/s while FW400 pegs at about 30MB/s. I'm
sure with lots of little files both of those rates drop. So if we assume
you have maybe 75GB of stuff to backup and you get maybe 7.5MB/s that
would be 10,000 seconds or about 2.8 hours.
CB
Andrew Ireland wrote:
Hi,
Can anyone advise how long a 250GB USB external drive should take to format
using Time Machine? It's been running for about 40 Minutes. Voiceover
doesn't appear to interact with the window that is open, all I can get out
of it is "busy".
Thanks in advance
Andrew
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