Hi Folks. Brian Kraut wrote: > > > I have been trying for a week on a 13G Maxtor and a 15G Western Digital > drive to set them up as 95/NT dual boot machines. When I do it on a > 3.5G drive everthing works fine. I have done this a month ago with my new 20 GB disk. It took me two weeks (!) to find out how, but now it works! There are some very nasty limitations of the NT installing and boot process. I ended up with this configuration: - No extra boot managers (like BootMagic) or drive managers like EZ-Drive - Boot from a small primary FAT16 paritition (C:) where the NT boot-manager can reside. My is 100 MB, less will work also. It must be at the beginning of the hard disk and be inside the first 256 cylinders (!) - Second paritition ( D: , first logical drive in the extendet paritition) 1 GB FAT16 (FAT 32 should work also) for Win9x - Third paritition (E:, second logical drive) : 2 GB NTFS for NT (FAT 16 should work also) - Rest - one big NTFS or FAT32 paritition or what ever you like ... There is a driver aviable enabling Windows NT acsess FAT32 filesystems. The read-only version of it is free. So if you like to acsess the big data paritition from both Win9x and NT, choose FAT32. If you want to prevent Win9x from acsessing it, use NTFS. - To do all this right, be sure your BIOS recognizes the big hard disk correctly. If not, try to update the BIOS. Be sure to remove all bootmanagers and harddisk managers like EZ-Drive. First install Win9x, then NT. This is the short form of my recomendation. Here are some more explanations. There are several limitations of Windows NT. - The Install procedure uses old ATAPI/IDE drivers and can not recogize big hard disk properly. On a running system the problem is solved with the Service Packs, they are not aviable at install time ... - The install procedure first formats FAT16 and copies the files on it and then converts it to NTFS. So the NT install paritition has all limitations of FAT16. There are some more or less complicated work-arounds for this problems described at http://www.ntfaq.com/ There is one more problem, not mentioned there. The NT boot loader has a bug causing a divide by 0 error for big hard disks. If the hard disk have more then 128 heads, the (primary) boot paritition have to be inside the first 512 cylinders. A hard disk with 256 heads the boot paritition have to reside inside the first 256 cylinders. Hope, all this helps you... Stefan.