This is not actually correct. WinNT 4.0 supports System partitions in the first 7.8Gb (8400000000) of the HDD. Thus you can have a system partition up to 7.8Gb if it starts at the beginning of the drive. Remember that NT's not a consumer OS so they don't only support current consumer standards (in fact they don't support current consumer standards (e.g. USB, PnP) at all). NTFS 4 can handle a theoretical 16 exabytes of drives. It's a business OS, they built it scalable. Anyway, if that doesn't help then try the following MS Knowledge base articles: This has got the above info: Q224526 Windows NT 4.0 Supports Maximum of 7.8-GB System Partition General info on NT partition support: Q138364 Windows NT Partitioning Rules During Setup Q197667 Installing Windows NT on a Large IDE Hard Disk Q114841 Windows NT Boot Process and Hard Disk Constraints A problem causing the 7B stop: Q153296 Write Cache on IDE/ATAPI Disks Is Not Flushed on Shut Down Install SP4 General troubleshooting info for STOP 7B (has 9 known causes): Q122926 Troubleshooting STOP: 0x0000007B or "0x4,0,0,0" Error WinNT 3.51 STOP 7B causes: This behavior can occur if any of the following conditions exist: Your computer is infected with a virus. There is a problem in the Atapi.sys driver. >From looking at these articles the 7Bs are generated by the ATAPI.sys driver. A lot of the fixes consist of replacing your ATAPI.sys with the latest Service pack version. Might like to try that. I'll send the SP6A ATAPI.sys offlist to save you downloading the 36Mb file for one 25K file. Good Luck, Tom. -----Original Message----- From: Michael Wieser [mailto:m.k.w@NEXTRA.AT] Sent: Wednesday, March 22, 2000 10:52 PM To: PICLIST@MITVMA.MIT.EDU Subject: Re: 95/NT dual boot problem Hi, I assume that you did some kind of partitioning the drives. It would be good to know this. NT4 _must_ have the bootpartition in the first 2 gig of the harddisk, I think W9x should have this too, there are some problems with boot-partitions greater then this (rember that NT4 started 1996, 2 gig was _huge_ and not very common for standardpc`s). I`m sure you can find some infos about this on microsoft`s site. Michael Wieser m.k.w@nextra.at Service and Audiodesign