If you want to install Vista onto an XP computer, try the reverse tutorial: (XP already installed) (How to Dual Boot Windows XP and Vista)Click here to read the entire tutorial

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-William. § (marvin_gohan)

I am not familiar with installing windows on a Mac, , so i am not familiar with bootcamp either.
Are you sure you are using a proper version of XP for the Mac?
Is it Pro or home?
To be honest i would suggest installing XP before Vista, if this is possible now. Vista is more versitile in installing, it will be easier for it to handle the triple boot issue than XP.

Yes, I'm using XP Pro SP2.
I have been thinking about installing XP first.
But I would prefer to have Vista on C: and XP on D: so I can get rid of XP once all my programs have become compatible with Vista.
Can I do a clean install of XP on D: first and then instal Vista as primary OS on C? [I'll check your other tutorial]

Also, any idea why currently windows boot mngr keeps giving me the missing or corrupt hal.dll notification?

Thanks,
Ned

Hey, I'm a total newbie; I'm not sure if another poster was asking about this or something else. I have a recovery partition (D) that is labeled as a primary partition. Should I delete that to make this process work?

Also a friend was telling me that XP does not support native SATA and would probably not install well. Any idea what he was talking about?

Thanks in advance!

you must have a SATA hard drive as opposed to an IDE drive. XP installs just fine on SATA drives, many people have done so.
You do not have to delete the partition, it is your choice, just be careful that the new partition for XP is also primary.

1st I must say thanks for providing all this help and i hope i get a response to this.

Anyways i did everything u said and all went well...except for the part to set the dual boot. When i insert my vista cd to boot from it, it just bypasses it after a while and goes directly to xp. (N:B - yeah i did set my dvd drive as the 1st boot device.) I really want help with this. Thanks in advance.

hmm, which OS is on the C: drive?
Are your drives SATA or IDE?
which bios are you running?

glad to hear it's working fine!
You are most welcome for any knowledge or assistance i may have supplied

Nice guide MR Wilson, i followed all of it but when its at the selection screen for the OS (either XP or Vista) i select XP and it doesnt work, it says "this application may be missing or corrupt" and i cant get XP to load. Any suggestions? Thanks in advance.

you're going to have to give me more information:
which OS is on which partition?
what does your bcdedit look like?