Linux disks and partition names may be different from other operating systems. You need to know the names that Linux uses when you create and mount partitions. Here's the basic naming scheme:
The first DASD device is named /dev/dasda.
The second DASD device is named /dev/dasdb, and so on.
The partitions on each disk are represented by appending a decimal number to the disk name: dasda1 and dasda2 represent the first and second partitions of the first DASD device in your system.