I need help triple booting mac, windows xp, and ubuntu linux with grub

[CamCracker]

I have sucsessfully been able to boot into all three systems, mac, windows, and linux, using grub (linux boot loader). But when I choose to boot into mac, it says press any key within 2 seconds to choose boot device. I would prefer not to have to do that every time and especially within 2 seconds. But I've tried everything to be able to get rid of it and boot into osx a different way. So I need to know if there is a way to make the 2 seconds become something like 20 or 30 seconds. Is there any program for editing grub that will do that. I know it most likely has to be done in linux, I'm fine with that. but I'm trying to sell the desktop and it'll be hard to sell with that. Can anyone help me? Thanks in advance!

[srs5694]

In most cases, when you select OS X from GRUB, it immediately chain-loads to the OS X installation disc and runs the boot loader code it finds there. Thus, you're probably seeing an OSx86 boot loader prompt -- one produced by Chameleon, Boot Think, or the like. I'm not an expert on configuring these boot loaders, so I can't give you more precise advice, but I recommend you focus on them, rather than on GRUB.

 

One exception: In some cases, when using GRUB 2, GRUB 2 boots the OS X kernel directly, without any other OSx86 boot loader. I can say with near-100% certainty that this is not currently happening on your system, since AFAIK it never presents a secondary prompt to select the boot device at this point; it should load the kernel and present kernel messages. You can, however, reconfigure GRUB2 to work this way, if you're using GRUB2 rather than the older GRUB Legacy. (If your GRUB version is 0.97, it's GRUB Legacy; if it's 1.9x, it's GRUB2.) This configuration is tricky, though; sometimes it works pretty well, but other times it doesn't. You're probably better off modifying your OSx86 boot loader and using a chain-load configuration, at least unless and until GRUB2 booting of OSx86 gets a little more mature.