Originally Posted by eliw
[groov@gold ~]$ su
[root@gold groov]# fdisk
bash: fdisk: command not found
When you su'ed to root you should add a '-' like this.
That will get you root's environment which has /sbin in the path. Or, doing it the way you did you can type /sbin/fdisk.
As for format, you might want to look at mkfs for creating a file system.