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It is my understanding that NT will NOT install on anything over 2G.
There may be new tricks available now, but we always installed WS on a 2Gig partition, then used Partition Magic to adjust the size afterwards.

The max partition size NT can create at set-up = 4Gig; it can be either FAT16 or NTFS. The 4Gig limit for NTFS arrives because NT initially creates a FAT16 partition (max = 4Gig under NT) and then converts it to NTFS later in the set-up (if NTFS requred.
To create greater than 4Gig:
Put the drive in another NT system and format the drive to NTFS partition of the size you want. This can be a Primary, or Primary/Extended...
Other way:
Create a small C: system FAT16 (active Primary) partition on the HD; make it around 250Meg. Make it bootable to DOS?
Install NT into this FAT16 C: partition; then open Disk Admin and create the Extended partition; then either format all of it as NTFS, or create a logical-drive (of a size you want) and format that as NTFS.
Re-install NT into the 'NTFS drive/area' you have just created.
Remember that if the HD is over 7.8/8Gig then you 'will' need to address that issue too.
For full details on this, visit:
http://www.windows2000faq.com/Articles/Index.cfm?ArticleID=13894
from John Savill's FAQ's at:
http://www.windows2000faq.com
You can leave the FAT16 NT version where it is if you wish, or delete it.
Both versions will use the same set of boot/start-up files in the c: system partition; do not lose the files in the C: system partition - otherwise = no boot to NT (of any type)...
When installing the NTFS version, clearly identify it so as to distinguish it from the FAT16 version (e.g. winnt = FAT16; winnt-2 = NTFS ??)
Job done either way...

Wanted to clarify something: Above I said there is a 2G limit for installing NT. This limit is if you're starting from scratch with no OS. A DOS boot disk could be used and DOS only supports up to 2G.
http://www.microsoft.com/TechNet/winnt/tips1099.asp

DOS does not only support up to 2 gig. if you create a FAT16 partition with NT4, you can use 64k cluster size and make it 4 gig. This is the ONLY operating system that can do this.

The maximum size for an NTFS partition is very large (16 exabytes); however, the maximum size for a FAT partition under Windows NT is 4 GB (2 GB under MS-DOS).
http://www.microsoft.com/TechNet/winnt/tips1099.asp

Why do people always want to have more than 2 GB ???
This is how you set up a server (or workstation) and have enough space to play if you insist on using FAT
c: (1 GB FAT or NTFS) only windows NT ( this will give you enough space to gather all the DLL's you are going to add during installation of apps
d: (2 GB Fat or >2GB NTFS) only for applications.
e: The rest of the space ( disk(s) or raid) in NTFS for Data.For server I always recommend to use NTFS for stability reasons

Use FAT for your C: drive because you can access it in DOS (and, for example, restore files from WINNT\Repair and edit Boot.ini) and run scandisk on it (which is alot more thorough and effective than checkdisk).
The original release of WinNT could only see the first 8.4GB of a drive. SP4 fixed this (if I remember rightly). Set up partitions with partition magic first if you can (it will ensure partition magic can handle them at a later date).

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