please

@ Targa
Welcome
If I understand you correctly, you want to install 4 PATA (IDE) HDDs on a P4P800SE? This MB only has two IDE channels(as well as 2 SATA connections), and no Promise controller. So if you install 4 PATA HDDs you won't have any room for CD/DVD drives to be installed.

In theory, Win98 and WinXP should recognize 4 PATA HDDs. You may have to add the extra HDDs after you install the Primary boot drive with Win98 and WinXP on it. You will need a cd-rom for the Win install discs, but you could remove it once you have the OS' installed(in theory, but I'm not sure this is what you want).

If you are getting the P4P800E-Deluxe, which has the Promise controller, then you could add the 3rd and 4th PATA HDDs to the PRI_RAID connector and just enable it as IDE(not RAID) in the BIOS. You will need to install the Promise IDE(non-raid)drivers as outlined in the clintfan link posted above, following the red-letter 'data'(<NOT 'OS') instructions.

You may be confused by the term 'SATA' in the clintfan post.

From clintfan..."Note the name "SATA378" is a brand name Promise uses to describe the non-RAID driver for the PDC20378 chip." This is the driver for IDE mode.

When finished, you will have 2 PATAs with Win98 and WinXP connected to the Intel controller and 2 PATA hdds for storage connected to the Promise controller. I would recommend setting up the PATA HDD with Win98 and WinXP before attaching the other drives. No sense in trying several difficult tasks at once and it will be easier to troubleshoot if there are problems.

I hope this is what you meant and I hope this is helpful. Keep us posted with your progress.