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Step 7: Format and Allocate the New Extent

Link to the minidisk described in Step 5 in read/write mode. Format the new extent and allocate it, using the CPFMTXA command. The command responds with a series of prompts to first format and then allocate the directory space.

When you finish with the format/allocate program, press Enter to return to CMS.

For example, the volume that will contain the new object directory is a 3390, linked at virtual address 100. It has a label of ESA240. The new object directory will be located on cylinders 1 through 50.

Important! Do not re-IPL until you complete Step 10: Change the allocation bit map on the old extent and re–IPL z/VM.

The series of command prompts and entries required to format this volume looks like the following, where the command prompts are in light type and the user entries are in bold type:

ENTER FORMAT OR ALLOCATE:
format
FORMAT FUNCTION SELECTED:
ENTER DEVICE ADDRESS (CUU):
0100
ENTER DEVICE TYPE:
3390
ENTER START CYLINDER (xxx) OR LABEL:
0001
ENTER END CYLINDER (xxx):
0050
ENTER DEVICE LABEL:
esa240
FORMAT STARTED
FORMAT DONE
000 NO. PAGE RECORDS WITH READ-CHECK ERRORS
ENTER FORMAT OR ALLOCATE:

The series of command prompts and user entries to allocate the new directory space looks like the following:

ENTER FORMAT OR ALLOCATE:
allocate
ALLOCATE FUNCTION
ENTER DEVICE ADDRESS (CUU):
100
ENTER DEVICE TYPE:
3390
ENTER DEVICE LABEL:
esa240
ENTER ALLOCATION DATA FOR VOLUME ESA240
TYPE CYL CYL
drct 1 50
end
ALLOCATION RESULTS
PERM 0000 0000
DRCT 0001 0050
PERM 0052 3339
DEVICE 100 VOLUME ESA240 ALLOCATION ENDED
ENTER FORMAT OR ALLOCATE: