Windows NT Setup Limitation 

Although FAT has a limit of 2 GB, Windows NT can format and use FAT partitions of up to 4 GB. Of course, other systems (such as MS-DOS and Windows 95) can't use these FAT partitions. 

NTFS limitations are much higher. Theoretically, NTFS supports partitions of up to 16 EB (exabytes), but for practical use, it's limited to 2 TB (terabytes). 1 TB is 1,024 GB and 1 EB is 1,024 TB. Unfortunately, Windows NT 4's setup has a nasty limitation that prevents you from creating partitions larger than 4 GB. 

Why? The setup will first format the partition with the FAT file system (even if you selected it to use NTFS), which is limited to 4 GB in Windows NT. After the first restart, the system will convert this FAT partition to NTFS. 

In other words, Windows NT 4's setup can only format partitions with FAT. 

You can get around this problem by inserting the hard disk in another computer that already has Windows NT installed and formatting the hard disk with NTFS on this computer.

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