SUMMARY: moving root partition to another disk

From: Paul A Sand <pas_at_unh.edu>
Date: Fri, 20 Dec 1996 13:11:26 -0500 (EST)

Hi --

In reference to my previous question:

> In preparation for an OS upgrade, I would like to move the root
> partition on one of my DU systems to a disk with more room on the a
> partition.

> I remember seeing a how-to article months ago in a DEC-published magazine
> describing the steps necessary to do this. But now, of course, I
> can't seem to find the article.

After a bit more searching, I located the article. It was in the
Summer-95 issue of ``INFOSHARE''. This is available online at
http://www.service.digital.com:80/pubs/infoshare/arch/INFOSHARE-Summer95.Z
(a compressed PostScript file). In brief, the steps are (assuming UFS
and Digital Unix):

1) use disklabel to write boot blocks to the new disk if necessary;

2) newfs, fsck, and mount the partition from the new disk;

3) Assuming you mounted the new disk partition at /mnt use

        dump 0f - / | (cd /mnt; restore xf -)

    to copy the root partition to the new disk;

4) edit /mnt/etc/fstab to indicate the new location of the root partition;

5) rewrite /mnt/sbin/swapdefault (if necessary) to point to a new
   swap partition;

6) umount and fsck the new partition.

If this doesn't work (or I hear any caveats from elsewhere), I'll post
an updated summary.


-- 
-- Paul A. Sand                 | A megabyte here, a megabyte there,
-- University of New Hampshire  | sooner or later it adds up to real memory.
-- pas_at_unh.edu                  | 
-- http://pubpages.unh.edu/~pas | 
Received on Fri Dec 20 1996 - 19:27:44 NZDT

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