IBM Professional Series User Manual page 256

Each buffer that the system needs must be a contiguous
block of system storage. The size of this area of storage
being the blocksize of the disk. Programs that
dynamically allocate storage based upon machine size
may use up all of the available storage. This may not
allow the system enough storage to allocate buffers for
its use. Consequently, a program needing a 4K disk that
uses all of the available storage may be unable to get
I/O buffers if they are not already allocated. For more
information on CMS storage management, refer to the
VM / SP System Logic and Problem Determination Guide
Vol.
2 -
eMS.
Responses:
DMSFOR603RFORMAT WILL ERASE ALL FILES ON DISK
'mode(cuu)' .
DO YOU WISH TO CONTINUE? (YESINO):
You have indicated that a disk area is to be
initialized: all existing files are erased. This message
gives you the option of canceling the execution of
the FORMAT command. Reply yes or no.
DMSFOR605R ENTER DISK LABEL:
You have requested that a label be written on the
disk. Enter a one- to six-character label.
DMSFOR7051 DISK REMAINS UNCHANGED.
The response to message DMSFOR603R was NO or
a null line was entered.
DMSFOR7321 'nnnnnnnnnn' FB-512 BLOCKS FORMATTED
ON DISK 'mode(cuu),
The format operation is complete.
DMSFOR733I FORMATTING DISK 'mode'
The disk represented by mode letter 'mode' is being
formatted.
Chapter 7. VM/PC Commands 7 -83