large partition problem

I have a RAID 5 system that I am having trouble mounting. When I use fdisk to make the partition, it does not make one large enough. When I use sfdisk I get the 2249.9 GB, 2249900163072 bytes partition expected. I tried to create both both ext3 and XFS file systems. When I create the ext3 file system, the following appears: mke2fs 1.38 (30-Jun-2005) warning: 479 blocks unused. Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) 6221664 inodes, 12419072 blocks 620977 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=4294967296 379 block groups 32768 blocks per group, 32768 fragments per group 16416 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424 Writing inode tables: done Creating journal (32768 blocks): done The maximum file system blocks looks correct. When I mount the device and execute df I get: /dev/sda1 48895340 184324 46227108 1% /usr2 Not even 50GB:-( My kernel is built to accommodate file systems larger than 2TB. My previous system was 1.58TB and worked correctly. It appears that when I exceeded 2TB something broke. Any advice would be appreciated. Apologies in advance if the solution is obvious. It is a bit late here. don