Formatted under FAT16 drives cannot be larger than 4Gb. The problem is that during NT install even if you decide to use NTFS the setup will pre-format drive w/FAT and then convert it to NTFS - thus you can't get past 4Gb during system install.<br><br>After the system is installed you can extend any partition past 4Gb by going to Disk Administrator (Start - Programs - Administrative Tools - Disk Administrator), selecting a partition and unpartitioned space (hold CTRL key down), and then selecting Extend Volume Set from the Partition menu.<br><br>The problem is - it's not applicable to boot or system partition!!!<br><br>That's the simplest solution. You can also use Partition Magic, though I'm not sure it can extend boot/system partitions.<br><br>As far as I know, the only possible way to extend the boot/system partition is using Unattended install; the following lines should be added to install file under the [unattended] section: <br><br>FileSystem = convertNTFS<br>ExtendOemPartition = 1, NoWait<br><br>Regards!<br><br><br>