User`s guide

SQUEEZE
before and after BAD files until the space between the last file is moved and the
BAD file is smaller than the next file to be moved.
Squeezing the System Volume
If you perform a SQUEEZE operation on the system volume, RT–11 automatically
reboots the running monitor when the compressing operation completes. This reboot
takes place to prevent system crashes that might occur when the monitor file or
handler files are moved.
The system volume cannot be SQUEEZEd if a foreground or system job is loaded.
Options
/OUTPUT:device
Transfers all the files from the input device to the output device in compressed
format, an operation that leaves the input device unchanged.
The output device must be an initialized and empty random-access volume.
(Use the INITIALIZE command to do this.) Note that RT–11 does not request
confirmation before this operation proceeds. If the output device is not initialized,
RT–11 displays an error message and does not execute the command.
Note: /OUTPUT does not copy boot blocks; you must use the COPY/BOOT
command to make the output volume bootable.
The following example transfers all the files from DU0: to DU1: in compressed
format, leaving DU0 unchanged.
.SQUEEZE/OUTPUT:DU1: DU0:
/[NO]QUERY
/QUERY causes RT–11 to request confirmation before it executes a SQUEEZE
operation. You must respond by typing Y (or any string beginning with Y)
RETURN
to initiate execution of an operation. RT–11 interprets any other response
to mean NO; it does not perform the specified operation. This is the default
operation. /QUERY is invalid with the /OUTPUT option.
/NOQUERY suppresses the confirmation message that displays before a
SQUEEZE operation executes. The following command compresses all the files
on device DU1: and does not query:
.SQUEEZE/NOQUERY DU1:
/WAIT
Initiates the SQUEEZE operation, but then pauses and waits for you to mount
the volume you want to SQUEEZE. This option is useful if you have a single-disk
system.
When RT–11 pauses, it displays Mount input volume in <device>; Continue?.
Mount the volume and type Y
RETURN
to continue the SQUEEZE operation.
312 RT–11 Command Descriptions