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Date:      Wed, 19 Jul 1995 04:30:36 +1000
From:      Bruce Evans <bde@zeta.org.au>
To:        imp@village.org, rgrimes@gndrsh.aac.dev.com
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: A problem with disklabel & "use entire disk" on 2.0.5R.
Message-ID:  <199507181830.EAA21989@godzilla.zeta.org.au>

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>> Is there some way to write a valid partion table to BSD only disks?
>> Wouldn't that solve the problem, or am I dreaming...

>Problem is that boot1 lives in sector 0 in this case, so anytime you
>install new boot blocks you end up with a 50K not quite right bogus
>partition table from the boot1 code.

>Newfs needs fixed to deal with the fact it _must_ preserve the existing
>partition table if installing boot code to physical sector 0 of the disk.

A partition that covers the whole disk must have offset 0 and cover the
MBR.  Such partitions can reasonably be considered as invalid.  Preserving
them would make no difference to FreeBSD and might not stop foreign
fdisks and installs from nuking them.

Bruce



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