!gte: FORMAT is a control word and maybe abbreviated to F.
The formats of the ALLOCATE control statements are:
ALLOCATE,devadr,devtype,volser
TEMP,startcyladr,endcyladr
PERM,startcyladr,endcyladr
TDSK,startcyladr,endcyladr
DRCT,startcyladr,endcyladr ERD devadr is a three-digit hexadecimal number that identifies the
address of the device that the Format/Allocate program is
to act upon. Valid device addresses under CMS are 1'001' to 1'5FF' for ECMODE OFF and X'OOl' to I'FFF' for ECMODE OR. devtype is a four-or-seven character field that defines an approved
device for the Format/Allocate program. Approved device
types ·are 2314, 2319, 3330, 3330-11, 3340-35, 3340-70, 3350, 2305-1, and 2305-2. Specify a 3350 device in 3330-1 compatibility mode as a 3330 and a 3350 in 3330-11 compatibility mode as a 3330-11. Specify a 3333 as a 3330, and 3340-70F or 3344 as 3340-70. volser is a one-to-six character field that represents the volume serial number of the volume you are formatting. startcyladr is the starting cylinder address on the DASD on which the
for.at function is to be performed. The start cylinder
address is entered as decimal digits.
endcyladr TEMP PERM TDSK DRCT
is the last cylinder address on the DASD format function is to be performed. The
address is entered as decimal digits.
on which the
end cylinder
indicates that the following operands identify temporary
storage space reserved for spooling or paging activity.
defines an area that can contain the logout area, the CP nucleus, and space that is not used by the system but is
available for use by virtual machine users (for example, for user minidisks).
defines the pooled space available fer virtual machine users after they have logged on the VM/370 system.
indicates that the following cylinders are reserved for
directory files. ALLOCATE is a control word and may be abbreviated to its first
letter, 1. 176 VM/370 Operator's Guide

Page of GC20-1806-9 As Updated April 1, 1981 by TNL GN25-0834 TEMP, PERM, TDSK, and DRCT are all functions of ALLOCATE. These
cards can follow the ALLOCATE control statement in any sequence. Each
card in turn overlays the cylinder table, and any space not reallocated
remains the same. If an ALLOCATE function overlays the cylinder allotment, then the previous cylinder space allotment is
truncated to the beginning of the next cylinder allotment. For example:
Disk storage
Allocation 1st-Entry TEMP- 2nd Entry PERM 3rd Entry TDISK 4th Entry DRCT
5th Entry END
First
Cylinder 000 010 040 000 1.ast Cylinder· 202 050 050 004 The result of this disk volume allocation is:
Disk storage
__ !!!Q£Ation _
DRCT TEMP PERM TDSK TEMP First
Cylinder 000 005 010 040 051 Last
Cylinder 004 009 039 050 202 Once an ALLOCATE control statement is encountered, all cards
following it until an END card is encountered are assumed to be part of
a single allocation. The Format/Allocate service functions cannot be
performed on another disk volume until the END card is encountered. Any
area not allocated will default to "TEMP" space. (See Figure 10.) Note, however that if the allocation extent map does not cover the
entire volume (as could be the case if the volume was copied from a
smaller volume or minidisk) the remainder of the volume is allocated as PERM space.
Note: Reallocation of a directory cylinder containing an active VM/370 aIrectory deallocates the directory to allow a new directory to be
written on the same cylinder. After reallocation, the Directory program
must be executed to reinitialize the directory pointer. If this is not
done, when you initialize (via IPL), your program will abend (ABEND CPI002). The format of the LABEL control statement is:
FORMAT,devadr,devtype,volser,LABEL
where:
devadr
devtype
is a three-digit hexadecimal number that identifies the
address of the device that the Format/Allocate program is
to act upon. Valid device addresses under CMS are X'001' to X'5FF' for ECMODE OFF and X'001' to X'FFF' for ECMODE ON.
is a character field that defines an approved
device for the Format/Allocate program. Approved device
types are 2314, 2319, 3330, 3330-11, 3340, 3340-35, 3340-70, 3350, 2305-1, and 2305-2. Specify a 3350 device
in 3330-1 compatibility mode as a 3330, and a 3350 in 3330-11 compatibility mode as a 3330-11. Specify a 3333 as
a 3330, and 3340-70F or 3344 as 3340-70. Section 4. VM/370 Service Programs 177