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Annotation of researchv10dc/man/adm/man8/reboot.8, revision 1.1

1.1     ! root        1: .TH REBOOT 8
        !             2: .CT 1 sa_auto
        !             3: .SH NAME
        !             4: reboot \- bootstrapping procedures
        !             5: .SH DESCRIPTION
        !             6: .PP
        !             7: Here are some recipes for booting and crashing the operating system
        !             8: on VAXes.
        !             9: .SS Rebooting a running system
        !            10: The preferred way to reboot is to log in on the console as super-user,
        !            11: invoke
        !            12: .B kill 1
        !            13: to take the system to single user,
        !            14: unmount file systems with
        !            15: .B /etc/umount -a
        !            16: and halt and restart the system
        !            17: as described below under `Console boots.'
        !            18: .SS Power fail and crash recovery
        !            19: The system will reboot itself at power-up or after crashes if
        !            20: auto-boot is enabled on the machine front panel
        !            21: or in the console software.
        !            22: If auto-restart is enabled,
        !            23: the system will first attempt to save a copy of physical memory
        !            24: on a reserved piece of disk.
        !            25: An automatic consistency check of the file systems is performed.
        !            26: Unless this fails the system will resume multi-user operations.
        !            27: .SS Console boots
        !            28: Sync the disks if necessary and possible.
        !            29: To recover hardware control of the console, type a
        !            30: .RB control- P .
        !            31: This will yield a
        !            32: .L >>>
        !            33: prompt from the VAX
        !            34: console subsystem (sic).
        !            35: The command
        !            36: .IP
        !            37: .B >>> H
        !            38: .LP
        !            39: will halt the CPU
        !            40: (except on the 11/750,
        !            41: where
        !            42: .RB control- P
        !            43: halts the CPU right away).
        !            44: .PP
        !            45: On MicroVAXes,
        !            46: .RB control- P
        !            47: doesn't work;
        !            48: hit the
        !            49: .SM BREAK
        !            50: key instead.
        !            51: .PP
        !            52: To boot multi-user with an automatic file system check,
        !            53: give the console command
        !            54: .IP
        !            55: .B >>> B
        !            56: .LP
        !            57: Commands to boot single-user vary.
        !            58: On the VAX-11/750 and on MicroVAXes,
        !            59: use
        !            60: .IP
        !            61: .B >>> B/3
        !            62: .LP
        !            63: On the VAX-11/780 and VAX 8550 and 8700,
        !            64: use
        !            65: .IP
        !            66: .B >>> B MAN
        !            67: .LP
        !            68: This will prompt with 
        !            69: .LR *
        !            70: for the name of the file to boot.
        !            71: The filename should be an executable image
        !            72: in the root directory
        !            73: of the filesystem at the beginning of the disk.
        !            74: .SS System core images
        !            75: If the system crashes
        !            76: and auto-restart is enabled,
        !            77: a copy of physical memory is written
        !            78: to a reserved piece of disk.
        !            79: To save a core image of a hung system, type on the console (after
        !            80: .RB control- P
        !            81: if necessary):
        !            82: .IP
        !            83: .EX
        !            84: >>> S 80000010
        !            85: .EE
        !            86: .PP
        !            87: The system will write the core image,
        !            88: then reboot automatically.
        !            89: .PP
        !            90: If the core image was written on
        !            91: .LR /dev/ra11 ,
        !            92: the following incantation will print a stack traceback
        !            93: from the time of the crash:
        !            94: .IP
        !            95: .EX
        !            96: adb /unix /dev/ra11
        !            97: $<crash
        !            98: $c
        !            99: .EE
        !           100: .PP
        !           101: To save disk space,
        !           102: the core image is sometimes overlaid on part of the swap area,
        !           103: where normal system operation will soon overwrite it.
        !           104: .IR Savecore (8)
        !           105: will copy the core image
        !           106: to an ordinary disk file.
        !           107: .SH FILES
        !           108: .TP
        !           109: .F /unix
        !           110: default system binary
        !           111: .SH "SEE ALSO"
        !           112: .IR fsck (8), 
        !           113: .IR init (8), 
        !           114: .IR rc (8),
        !           115: .IR savecore (8)
        !           116: .SH BUGS
        !           117: Older boot programs with different syntax are still around in a few places,
        !           118: especially on machines with Emulex UNIBUS disk controllers,
        !           119: for which silly boot ROMs are common.
        !           120: .PP
        !           121: There are commands
        !           122: .B /etc/reboot
        !           123: and
        !           124: .B /etc/halt
        !           125: which attempt to reboot and halt the system;
        !           126: their function is indeterminate
        !           127: and likely to change.

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