[vox-tech] Getting new Linux box to boot

Peter Jay Salzman p at dirac.org
Fri Dec 31 15:54:12 PST 2004


On Fri 31 Dec 04,  3:38 PM, Richard S. Crawford <rscrawford at mossroot.com> said:
> On Friday 31 December 2004 11:07, Peter Jay Salzman wrote:
> >    1a. cd into your *real* root filesystem, /mnt
> >    1b. Use chroot.  This makes /mnt temporarily "look" like /.
> >    1c. Run lilo and reboot.
> 
> I remounted lumix to /mnt/lmx via:
> 
> # mount /dev/hda1 /mnt/lmx -t ext2 -o exec
 
Hmmm.  I'm starting to run out of ideas.  Maybe Rod, Rick, Henry, Mark or
Jeff will have more ideas.  Try:

   # mount /dev/hda1 /mnt/lmx -t ext2 -o remount,exec

> Then I executed mount and got this:
> 
> # mount
> .
> .
> .
> /dev/hda1 on /mnt/lmx type ext2 (rw)
> 
> which seems like the exec flag is not being set.
 
You can test this.  Write a little shell script called 'hello' on /mnt/lmx:


##################  cut here
#!/bin/sh

echo "Hello World"

##################  cut here

Change its permissions:

   chmod u+x ./hello

And try to run it:

   ./hello

If the partition is mounted as noexec, you'll get a really wierd message
like "bad interpreter".


> Also, when I tried chroot:
> 
> # chroot /mnt/lmx /bin/sh
> 
> I got:
> 
> illegal instruction
> 
> I double checked and made sure that sh is really in /mnt/lmx/bin/sh


I Googled for this, and found that "illegal instruction" from chroot comes
from two main things:

   1. Varied hardware problems

   2. Running something compiled for a more advanced system.  In one case, a
      person was installing Gentoo using a stage 2 disk intended for 686 on
      an old Pentium Pro.

I'm more apt to to lean towards #2.  What kind of computer are you doing
this on?  Have you read any lmx README files?  Maybe they have "system
requirements" or something.

Pete

-- 
The mathematics of physics has become ever more abstract, rather than more
complicated.  The mind of God appears to be abstract but not complicated.
He also appears to like group theory.  --  Tony Zee's "Fearful Symmetry"

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