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Diffstat (limited to 'static/v10/man8/bproc.8')
| -rw-r--r-- | static/v10/man8/bproc.8 | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/static/v10/man8/bproc.8 b/static/v10/man8/bproc.8 new file mode 100644 index 00000000..fd4f5a77 --- /dev/null +++ b/static/v10/man8/bproc.8 @@ -0,0 +1,235 @@ +.pa 1 +.he 'BOOT PROCEDURES (VIII)'2/6/73'BOOT PROCEDURES (VIII)' +.ti 0 +NAME bos, maki, vcboot, msys, et__ al__. +.sp +.ti 0 +DESCRIPTION +.br +.in 8 +On +the RF disk, the highest 16K words are +reserved for stand-alone programs. +These 16K words are allocated as follows: +.sp +bos (1K) +.br +Warm UNIX (7K) +.br +Cold UNIX (8K) +.sp +The program bos___ (Bootstrap Operating System) +examines the console switches and executes +one of several internal programs depending on the setting. +The following settings are currently recognized: +.sp +.in +8 +.ti -8 +??? Will read Warm UNIX from +the RF into core location 0 and transfer to 600. +.sp +.ti -8 +1 Will read Cold UNIX from the +RF into core location 0 and transfer to 600. +.sp +.ti -8 +10 Will dump all of memory +from core location 0 onto DECtape drive 7 +and then halt. +.sp +.ti -8 +20 Will read 256 words from RK0 into +core 0 and transfer to zero. +This is the procedure to boot +DOS from an RK. +.sp +.ti -8 +40 This is the same as 10 above, but +instead of halting, UNIX warm is loaded. +.sp +.ti -8 +0 Will load a standard UNIX binary paper tape +into core location 0 and transfer to 0. +.sp +.ti -8 +77500 Will load the standard DEC absolute and binary +loaders and transfer to 77500. +.sp +.in 8 +All manual methods of booting the system involve +manipulation of the console switches. +In order for this to be possible, +the panel must be unlocked +and the machine must be halted. +Also, remember that at the time UNIX comes up, +the console switches must contain 773030 +for a single-user system; anything else gives +a multi-user system. + +There are four temperatures of boots. +They are: + +.in +4 +Hot boot: restart the system without refreshing +its code, that is simply by transferring to +its start. +The only use for this procedure is if the +system has been patched and one doesn't wish +to redo the patches. +The procedure is: + + 600 in switches + Load address + (773030 in switches for single-user system) + start + +Warm boot: refresh system code from the RF disk, but +the "panic" routine must be in core. +Best for general use if it works, since +outstanding I/O +is cleaned up. +Procedure: + + 602 in switches + load address + (773030 in switches for single-user system) + start (flushes any I/O, then executes bos___) + +Cool boot: RF disk is OK, but nothing in core. +Procedure: + + UTIL DECtape on drive 0 + 773030 in switches + load address + (602 in switches for multi-user system) + start + type "boot" on console tty to load bos___ + +Cold boot: nothing in core, nothing on RF. +Best to have an expert around for this +one. +Procedure: + + INIT DECtape on drive 0 + 773030 in switches + load address + 1 in switches + start + (machine halts. last chance to preserve RF!) + 773030 in switches + continue + (reads in basic files) + +UNIX is then up, but for various reasons, one should +do a warm boot (single user) right away. +At this point also, one might +consider whether the INIT tape UNIX is the +latest version. +If there is reason for doubt, +mount the /sys disk pack, change to directory +/sys/sys, do "msys u unix", and reboot. +Then get the /bin-/etc-/lib tape which contains +the rest of of the RF disk, +and do an "mt x". +Conceivably, "create errors" due to lack of some +directories will occur; make the directories, +then try again. +Set the date correctly; the system starts off +at time 0. + +At this point UNIX is in full operation and +can be rebooted for +a multi-user system. +.sp +.in 8 +Here is what happens during a cold boot: +the INIT tape contains a program called +.ul +vcboot. +The ROM program reads vcboot +from the tape into +core location 0 and transfers to it. +vcboot then reads 16K words from +the DECtape (blocks 1-32) +and copies the data to the highest 16K words of +the RF. +Thus this initializes the read-only part of the RF. +vcboot then reads in bos___ and executes it. +bos___ reads in Cold UNIX and executes that. +Cold UNIX halts for a last chance before +it completely initializes the RF file system. +When continue is pressed, +Cold UNIX initializes the RF. +It then reads the DECtape for initialization files +starting from block 33. +Normal operation then commences +with the execution of "/etc/init". +.sp +The INIT tape is made by the program maki____ +running under UNIX. +maki____ writes vcboot______ on block 0 of +.ul +/dev/tap7. +It then copies the RF 16K words (using +.ul +/dev/rf0) +onto blocks 1 thru 32. +It has internally a list of files to +be copied from block 33 on. +This list follows: +.sp +.nf +.in +8 +/etc/init +/bin/chmod +/bin/date +/bin/login +/bin/ls +/bin/mkdir +/etc/mount +/bin/sh +/bin/tap +/bin/mt +.in -8 +.fi +.sp +Thus this is the set of programs available after a cold boot. +init____ and sh__ are mandatory. +For multi-user UNIX, +getty_____ and login_____ are also necessary. +mkdir_____ is necessary due to a bug in tap___. +mt__, tap___ and mount_____ are useful to +bring in new files. +As soon as possible, date____ should be done. +That leaves ls__ and chmod_____ as frosting. +.sp +The last link in this incestuous +daisy chain is the program msys____. +.sp + msys____ char file +.sp +will copy the file file____ onto the +RF read only slot specified by the character char____. +Char is taken from the following set: +.sp + b_ bos + u_ Warm UNIX + 1_ Cold UNIX +.sp +.in 16 +.ti 0 +FILES /dev/rf0, +/dev/tap? +.sp +.ti 0 +SEE ALSO init(VII), +tap(I), +sh(I), +mkdir(I) +.sp +.ti 0 +DIAGNOSTICS -- +.sp +.ti 0 +BUGS This +section is very configuration dependent. |