The steps you should use are: 1) CPFMTXA or ICKDSF CPVOL FORMAT UNIT(xxx) the volume. 2) ATTACH xxx SYSTEM 3) Allocate a minidisk yyy in the CP directory entry for the guest using the label of new volume XXX in the MDISK card. 4) Put directory online 5) if guest is running, log on to guest userid. 6) #CP LINK * yyy yyy M 7) #CP DISC (or do the link command with hcp or vmcp) 8) Bring the disk online in Linux if it doesn't automatically do so.
Then you should be able to partition and format it for Linux use.
