problem with e2fsprogs

[F.Roccato@isao.bo.cnr.it]

Hi all,
	i'm trying to configure a scsi disk:
I have 3 primary partitions

the command
mke2fs /dev/sdb1  works...
mke2fs /dev/sdb2  works... 
mke2fs /dev/sdb3  don't. Here the output:

mke2fs /dev/sdb3 
mke2fs 1.18, 11-Nov-1999 for EXT2 FS 0.5b, 95/08/09
mke2fs: Device not configured while trying to determine filesystem size



Here the fdisk output:

Command (m for help): p

Disk /dev/sdb: 255 heads, 63 sectors, 1111 cylinders
Units = cylinders of 16065 * 512 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/sdb1             1       510   4096543+  83  Linux
/dev/sdb2           511       765   2048287+  83  Linux
/dev/sdb3           766      1111   2779245   83  Linux



Any idea? whi mke2fs works with the firs and the second partition, but not
with the third?

THX

Biko