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Dr. Mac's OS X Tip-of-the-Day

Switch to X or 9 at boot time? Maybe...
By BOB LEVITUS
If you want to switch operating systems on the fly, by which I mean between the
time you press the power button or choose Restart, there are a couple of ways to
do it. If you have OS X on one disk or volume and OS 9 on a different one, you
can hold down the Option key and pick OS 9 or OS X to startup from when the
Startup Manager (a part of your Open Firmware) appears. Click the OS 9 or OS X
icon, then the non-circular arrow button to start up. Click the circular arrow
to rescan for drives.
If you have only one volume or hard disk with both OS 9 and OS X on it, there is
hope, but it's not going to work every time. In fact, unless you booted into OS
9 the last time you restarted, and now want to boot into OS X, you're pretty
much out of luck. But if you did boot from 9 last, pressing and holding the X
key during startup often works to boot into OS X. If it works for you, don't
forget to change the selection in the Startup Disk system preference pane back
to OS 9. This trick is pervasive and after you do it, your Mac will continue to
boot into OS X until you instruct it not to.
To discuss this tip (or anything you like) in Dr. Mac's OSXFAQ Forum, click
here:
https://forums.osxfaq.com/viewtopic.php?topic=586&forum;=100
Bob LeVitus is a leading authority on Mac OS and the author of 37 books,
including Mac OS X For Dummies and The Little iTunes Book.
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