panic: iinit: how configuring works
System Mangler
mangler at cit-vax.Caltech.Edu
Mon Aug 4 17:55:16 AEST 1986
In article <2395 at teklds.UUCP>, setha at teklds.UUCP (Seth D. Alford) writes:
> When you change your unit plugs ...
> ... depending on how your system is configured,
> you may lose data. If you are swapping on a non-b partition on one of
> your disks, you may find yourself swapping on a non-b partition on another
> disk. Your data on the file system on that partition will be wiped out.
On 4.2/4.3 BSD, if you wildcard the unit numbers in the config file,
this can happen even without changing the unit plugs - if a paging
disk is missing or not powered up, the wildcarding substitutes some
other disk, and you wipe out any filesystem that crosses that area.
(I still remember spending my 21st birthday reconstructing an RT11
directory that got swapped on. It taught me the value of backups).
Unit number wildcards seem to be quite dangerous without really giving
you anything. I don't use them any more.
Don Speck speck at vlsi.caltech.edu seismo!cit-vax!speck
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