Windows disk doesn't show up in Startup Disk -- only on reboot w/option key

Greetings,
I installed Windows XP on a separate SATA drive, and all is well with it. But it doesn't show up as an option in Startup Disk. The only way I can boot from it is to Restart and hold the option key down. Its icon DOES show up in the "choose disk" screen that follows.
Another user posted the same problem here, and someone suggested zapping the PRAM. I did this, allowing it to cycle through four times, but it didn't help.
Any other suggestions?
Thanks,
DM

Hi,
Try posting in the Windows Compatibility Forum.
http://discussions.apple.com/forum.jspa?forumID=687
Carolyn

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