Path: utzoo!utgpu!watmath!att!tut.cis.ohio-state.edu!cs.utexas.edu!wasatch!helios.ee.lbl.gov!epb2.lbl.gov!envbvs
From: envbvs@epb2.lbl.gov (Brian V. Smith)
Newsgroups: comp.unix.wizards
Subject: Re: Trashed Disk Labels Under Sun OS 3.5
Message-ID: <3555@helios.ee.lbl.gov>
Date: 9 Aug 89 23:36:51 GMT
References: <5253@wiley.UUCP>
Sender: usenet@helios.ee.lbl.gov
Lines: 18

writes:
< 
< How come when I mount all of the disk as swap or anything in an 'a'
< partition on a local Micropolis 1355 disk connected to one of our
< clients the disk label gets trashed?  I have to recover the label with
< diag.  Allocating file systems and swap on the disk shouldn't trash the
< disk label, should it?  Sorry if this question was asked before.


Never put a swap area on partition 'a' of any drive.  The superblock
will be written over by swapping. 
This is true for Ultrix (2.x and 3.0 at least).  I'm not sure
about other os's.
Make at least a small 'a' partition followed by the 'b' swap partition.
_____________________________________
Brian V. Smith    (bvsmith@lbl.gov)
Lawrence Berkeley Laboratory
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