Technical data

Starting Up and Shutting Down the System
4.7 Writing a New Boot Block on the System Disk
This message means that access to the target device is limited. Check the
WRITE PROTECT button on the disk drive.
• ‘‘Boot file is not contiguous.’’
This message means that the primary bootstrap image, VMB.EXE or
APB.EXE, is not contiguous on disk. Perform one of the following actions:
On VAX systems, enter the following command:
$ COPY/CONTIGUOUS device:[VMS$COMMON.SYSEXE]VMB.EXE; -
_$ device:[VMS$COMMON.SYSEXE]
This command copies the VMB.EXE file contiguously to the next higher
version number.
On Alpha systems, enter the following command:
$ COPY/CONTIGUOUS device:[VMS$COMMON.SYSEXE]APB.EXE; -
_$ device:[VMS$COMMON.SYSEXE]
This command copies the APB.EXE file contiguously to the next higher
version number.
Rewrite the boot block for the new image by running WRITEBOOT again.
• On VAX systems, ‘‘VBN must be >= 1.’’
This message means you cannot specifya0asthevirtual block number
(VBN).
Example
On VAX systems, the following example writes a boot block on a system disk:
$ RUN SYS$SYSTEM:WRITEBOOT
Target system device (and boot file if not VMB.EXE):? DUA0:[VMS$COMMON.SYSEXE]VMB.EXE
Enter VBN of boot file code (default is one):
Return
Enter load address of primary bootstrap in HEX (default is 200):
Return
On Alpha systems, the following example writes a boot block on a system disk:
$ RUN SYS$SYSTEM:WRITEBOOT
Update VAX portion of boot block (default is Y): N
Update Alpha portion of boot block (default is Y):
Return
Enter Alpha boot file: DUA0:[VMS$COMMON.SYSEXE]APB.EXE;
4.8 Shutting Down the System
The operating system provides the following shutdown procedures:
Procedure Purpose
For More
Information
SHUTDOWN.COM An orderly shutdown procedure. This procedure
shuts down the system while performing
housekeeping functions such as disabling future
logins, stopping the batch and output queues,
dismounting mounted volumes, and stopping
user processes.
Section 4.8.1
Starting Up and Shutting Down the System 4–21