Kaser BW - Manual (Page 22)

7) Click Start.
8) Click Yes to confirm that you wish to partition the disk. Please note that any
music or data on the MP3 player will be deleted. (see Step 3).
9) After the partitioning process, restart the computer. After restarting, there
will be two removable disk icons – one for each partition.
Using the Encrypted disk
1) The encrypted disk contains an application RdiskDecrypt. To read or copy
files to the encrypted disk, launch this application by double-clicking its icon.
2) Enter the username and password you selected in Step 6 and click OK. If the
username and password are correct, the encrypted disk will function like any
other USB removable disk.
Each time you connect the player to your computer, you will need to start the
RdiskDecrypt application and enter your username and password before you
are able to read or copy files from the encrypted disk.
Note: If you choose to repartition the disk (increasing the encrypted partition
or deleting it), you may lose important data. Backup your music and files before
proceeding.