I slipstream sp2 into xp pro sp1, its a volume license edition with winnt.sif file unattended file. The problem is when I insert the cd I am getting the Please Insert Disk Labeled Windows XP Professional Service pack 2 in drive A : I tried using the nlite but for some reason it takes forever to load the setup files and had a couple errors on loading files. If I use the original cd its fine . So I know its not my CD rom. Is their something I need to change in the LAYOUT.INF in I386 folder of my ISO so I doesnt look for SP 2 CD error as above ?? Thanks