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- Newsgroups: comp.unix.aux
- Path: sparky!uunet!think.com!yale.edu!ira.uka.de!Germany.EU.net!ubrinf!thomas
- From: thomas@mathematik.uni-Bremen.de (Thomas Eberhardt)
- Subject: Re: Restoring root partition dumps
- Message-ID: <thomas.726597219@mathematik.uni-Bremen.de>
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- Organization: Univ. Bremen, Informatik
- References: <1357@jagubox.gsfc.nasa.gov> <1ikdchINNheo@transfer.stratus.com> <1359@jagubox.gsfc.nasa.gov> <1ikofaINNrmm@parlo.hal.COM> <1362@jagubox.gsfc.nasa.gov>
- Date: Sat, 9 Jan 1993 16:33:39 GMT
- Lines: 26
-
- jim@jagubox.gsfc.nasa.gov (Jim Jagielski) writes:
-
- >I doubt it... HD Setup will create the two file systems and give both of
- >them a slice # of 0... Thus, there would be no way for A/UX Startup
- >to know which slice0 to use. That's the reason for keeping the backup
- >and something like Free User (slice 3) and then resetting it to Root
- >(slice 0) only when needed.
-
- I use kconfig(1m) to configure the kernel on my emergency file system
- to explicitly use the emergency file system as the root & pipe device.
- For example, if the emergency file system resides on a hard disk with SCSI
- ID 2 and the emergency file system is slice 3, use (from A/UX Startup):
-
- kconfig -n (2,0,3)/unix
- ROOTDEV=0x1A03
- PIPEDEV=0x1A03
- <ctrl>d
- launch -nv (2,0,3)/unix
-
- The formula for the device number is 0x1800 + (SCSI-ID << 8) + slice, i.e.
- (major << 8) + minor of the device files in /dev/dsk.
- --
- thomas@mathematik.uni-Bremen.de |Centrum fuer Complexe Systeme & Visualisierung
- Thomas Eberhardt |Universitaet Bremen, FB 3, Postfach 330 440
- Koelner Str. 4, W-2800 Bremen 41|W-2800 Bremen 33, Germany
- Phone: +49 421 472527 |FAX: +49 421 218-4236, Office: 218-4823
-