I have an Emachine 400 MHZ, Celeron, 192 MEG, running XP upgraded from W98. The original 6.4 Seagate drive is maxed out. I added a Maxtor 40 Gig. I originally installed the drive with the MaxBlast software, only to find out later that it does not support XP. I reformatted the drive using XP disk management with the 40 as a slave to the 6.4. The 6.4 has the FAT32, and the 40 has the NTFS file system. I cannot get the 40 to load as the Master. I get the 'missing NTLDR' error, push Ctr-Alt-Del. I cannot find this file on my 6.4. The drive works fine as a Slave to the 6.4. I cannot find any info for XP and NTLDR on this site or the MS Customer Service site. I can set everything up to work with it as is, but prefer to get the 40 working as the only drive. I had planned to keep the 6.4 as a backup, not connected to any computer. I am fairly competent with changing around hardware, but admit to being lost when it comes to configering, etc. THANKS in advance