[BL] installing BL3 from ext2 hd partition to loop .img file

David Moberg davidjmoberg at lycos.com
Wed Apr 20 19:26:52 EDT 2005


----- Original Message -----
From: "sindi keesan" <keesan at sdf.lonestar.org>
 
> More progress.  I discovered my zip disk was defective (would not 
> even format) and got another one.  I also realized that you need to 
> edit the new fstab if you copy the file system from ext2 hd 
> partition to a loop file (change /dev/hdb1 or whatever your 
> partition is to /dev/loop0).  I now have something that will boot 
> properly from e:\baslin but is 50MB instead of 20MB and contains 
> changes I made to the hd version.
> 
> When this file boots there are some error messages - why?
> 
> change_root: old root has d_count=2
> Trying to unmount old root in <3> error -16
> Change root to initrd:  error -2

How are you booting this?

> It boots anyway.
>
> My next problem is that this parallel port zip drive appears not to 
> work. It lights up, and I have it plugged into parport0 or into the 
> printer switch box which is switched properly, but 'no ppa 
> compatible devices found'.  This might be why it was in a dumpster. 
>   I have one other that someone donated to the Reuse Center.  Might 
> I be doing anything wrong? Iomega Z100P2 with the cable it came 
> with, which looks just like the scsi cable on the scsi zip drive.  
> 25-pin D-shell type.  Are the two types of cable wired differently? 
>   Should I try a different cable?  This is an Iomega blue cable, 
> labelled 'zip' but not scsi or parallel.

Have you gotten other ZIP drives to work with ppa? Is this a ZIP
Plus drive? ZIP Plus needs the imm driver. You can get it from
Slackware 7.1. I'll have to remake the bootdisk if that's the case.

> David's blppaz.gz image for booting from floppy disk seems to be 
> working - it just cannot insmod ppa.o.  It is based on grub rather 
> than lilo.
> 
> Is grub bigger or more confusing to use than lilo?

A little bigger. The size is not bad. I find lilo much more confusing.
Grub is also more flexible. Unlike lilo, you can replace Linux with a
newer version and the floppy will still work with the new kernel. lilo
must be reinstalled.

> While the fs.img file is still mounted, you need to edit fstab to 
> change from the ext2 hd partition to loop0.  It booted anyway but 
> mtab looked a bit odd - I was seeing /dev/hdb1 also mounted to / 
> along with /dev/loop0.

I can't understand why the above is necessary. Maybe after you tell
me how you're booting from fs.img things will clear up.

David
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