I have a w2k-sp4/XP-sp1 dual boot pc (P4 2.8 Ghz Asus P4P800). I boot into W2k with no problem at all. On the other hand, when selecting XP, the boot process hangs when it reaches the Windows logo against a blue background. I had a look at various forums on this topic and tried the solutions suggested to no avail. Going into Safe mode comes up with exactly the same result, regardless of the options selected. I ran Avast against the XP partition from the w2k system. No virus found. I replaced the faulty XP partition by an early operational copy from a USB disk. I replaced the disk containing XP by a brand new one. I ran XP Install-Repair with an XP-SP2 cd-rom. When the process reached "34 minutes remaining", a black screen appeared. The process went on for two or three minutes and then stopped. I ran the Repair once more with the same result. It's interesting to note that for the past few years, I have had no problem at all with W2k (it's my working OS) while, during the same period, I had to re-install XP several times.

You are installing to separate partitions? For what it is worth. I had the same problem. When I did get XP to install and run then Win2000 didn't boot. Did a repair on 2000 and XP wouldn't boot. I gave up.

"I replaced the faulty XP partition" what did you use to do this? "I replaced the disk containing XP by a brand new one." that's a bit confusing considering your partition replacement. W2k is on one drive and xp on another? Please confirm. How are your hard drives configured? Master/slave? At the install screen does it see the xp drive? can you access, partition and format the new drive from w2K? Imagine the power if you knew how to internet search

"I replaced the faulty XP partition" what did you use to do this? Acronis Disk Director Copy function "I replaced the disk containing XP by a brand new one." W2k and XP primary partitions are side by side on a master disk along with other logical data partitions. I used Easy Migrate to clone the original disk onto the new disk. I can access the XP partition from w2k through Windows Explorer.

"Easy Migrate to clone the original disk onto the new disk." You then removed the original disk? Is this new disk a SATA disk? Imagine the power if you knew how to internet search