all the info about XPostFacto in one place
-Ensure that you have a few GBs of free hard drive space ...
A minimal install of Panther, for example will fit in ~1.3G, but you'll definitely want more than this, to have room in which to 'turn around' - e.g. do an 'archive and install'.
-If possible, have/use
a separate graphics card installed if you're using a Beige G3 (and possibly earlier Macs too) with Panther or Tiger - the onboard video is
... sometimes
a dedicated video card
will give better performance in OS X anyway. Graphics cards must be
Mac-specific versions of the card, or cards from PCs that have been flashed for use on a Mac.
-Get a copy of OS X - newer versions of OS X are generally better as they are more optimised so will run faster, so use Panther or Tiger if possible.
However, there are practical limits, and what's pretty isn't always practical: reach higher up the version scale only if your machine is well-tuned and amply fitted out.
...
-Check that your Mac's PRAM battery is working ... see if it has remembered the time/date settings. If it's reverted to a year in the
previous century,
you may be able to avoid problems later on by getting a new battery for it...