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	Do you know what/where the original partitions were on the disk?
	If you can reset the disk label you should be able to check each
	partition in turn to determine which are salvagable.

	The DOS partition is probably a good place to begin (checking it
	under NetBSD).

                David/abs               abs@anim.dreamworks.com

    		       - Oakwood apartments -
     - $1300 a month and people steal your laundry - What a place -

On Tue, 6 May 1997, Andrew Brown wrote:

> i was all set to swap an old drive out (500m) for the new one (5gig)
> when the machine crashed ("fatal page fault in supervisor mode" iirc,
> although i can't tell you any more than that).  it dumped (of course)
> and now it won't boot anything at all (boot disk error, press any key
> to continue sort of thing).  my root disk (1.2g) is now not working at
> all.
> 
> so i boot with a new install disk (1.2.1, vs. 1.2 that the machine was
> running since i didn't wanna dl the upgrade over ppp and i had 1.2 on
> my laptop to install in the first place) and run disklabel on the
> broken wd0 (both drives in this machine are ide).  disklabel would
> usually give me the netbsd disklabel (if there was one, which there
> was at one point) or the dos partition table info otherwise (like i've
> got on wd1).
> 
> # disklabel wd0
> # /dev/rwd0d:
> type: unknown
> disk: 
> label: WDC AC31200F    
> flags:
> bytes/sector: 512
> sectors/track: 63
> tracks/cylinder: 16
> sectors/cylinder: 1008
> cylinders: 2484
> total sectors: 2503872
> rpm: 3600
> interleave: 1
> trackskew: 0
> cylinderskew: 0
> headswitch: 0		# milliseconds
> track-to-track seek: 0	# milliseconds
> drivedata: 0 
> 
> 8 partitions:
> #        size   offset    fstype   [fsize bsize   cpg]
>   d:  2503872        0    unused        0     0       	# (Cyl.    0 - 2483)
>   f: 805306368 1457452991    unused        0     0       	# (Cyl. 1445885*- 2244800*)
>   g:        4 -1238368256     MSDOS                    	# (Cyl. 3032340*- 3032340*)
>   h:        4 -1239353409    unused        0     0       	# (Cyl. 3031362*- 3031362*)
> disklabel: boot block size 0
> disklabel: super block size 0
> disklabel: warning, partition e: size 0, but offset 65540
> disklabel: partition f: offset past end of unit
> disklabel: partition f: partition extends past end of unit
> disklabel: partition g: offset past end of unit
> disklabel: partition g: partition extends past end of unit
> disklabel: partition h: offset past end of unit
> disklabel: partition h: partition extends past end of unit
> 
> which says to me that it's completely hosed.
> 
> unfortunately for me, there's data on this disk that i'd like to keep.
> not only in the netbsd partition, but also in a dos filesystem and a
> couple of linux ext2fs file systems.  the 1.2 will *completely* fit
> onto the 5g disk (assuming that i just start fresh on the 5g and then
> want to use the 1.2g for something else).
> 
> but is there anything i can do with this?  i'm assuming that the disk
> is mostly intact (unless dump really lost it's brain (how can i make
> netbsd simply not dump and instead just reboot please?)) and i'm
> amusing myself with the notion of trawling though the disk looking for
> superblocks and stuff.  is there anything more clever i can do?
> 
> system is (was :) as follows:
> intel 486dx50
> 32 megs ram
> wd0: 1.2g western digital
> wd1: 500m seagate
> netbsd/i386 1.2
> 
> -- 
> |-----< "CODE WARRIOR" >-----|
> andrew@echonyc.com (TheMan)        * "ah!  i see you have the internet
> codewarrior@daemon.org                               that goes *ping*!"
> warfare@graffiti.com      * "information is power -- share the wealth."
> 

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