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Date:      03 Nov 2000 13:27:26 -0500
From:      Randell Jesup <rjesup@wgate.com>
To:        Barry Pederson <barryp@medicine.nodak.edu>
Cc:        arch@FreeBSD.ORG
Subject:   Re: Like to commit my diskprep
Message-ID:  <ybug0l89ai9.fsf@jesup.eng.tvol.net.jesup.eng.tvol.net>
In-Reply-To: Barry Pederson's message of "Thu, 02 Nov 2000 13:55:15 -0600"
References:  <Pine.BSF.4.05.10011021602500.10193-100000@login-1.eunet.no> <200011021632.eA2GWZ138286@earth.backplane.com> <ybupukecnoq.fsf@jesup.eng.tvol.net.jesup.eng.tvol.net> <3A01C6A3.23C4CD61@medicine.nodak.edu>

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Barry Pederson <barryp@medicine.nodak.edu> writes:
>>         The defaults for -b and -f and -c for newfs/etc are WOEFULLY
>> out-of-date.  See the sysinstall checkin comment I referenced.  I use 16K
>> myself.  It's possible larger might be better, especially for large
>> partitions - perhaps make it variable on partition size....  And 16 for cpg
>> is truely criminal (can you say thousands of spare root blocks?  And very
>> slow newfs?)
>
>The man page for newfs says:
>
>---------
>BUGS
>     The boot code of FreeBSD assumes that the file system that carries the
>     kernel has blocks of 8 kilobytes and fragments of 1 kilobyte.  You will
>     not be able to boot from a file system that uses another size.
>---------
>
>So I'd assume you have to be careful to leave the root at the current
>defaults? (or make the boot code smarter?)

From my system:
 a:   819200        0    4.2BSD     4096 16384    75   # (Cyl.    0 - 812*)

        So I think that documentation is buggy, not the code.  Anyone else
care to confirm?

-- 
Randell Jesup, Worldgate Communications, ex-Scala, ex-Amiga OS team ('88-94)
rjesup@wgate.com



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