Date: Wed, 31 Jan 1996 11:39:49 -0700 (MST) From: Terry Lambert <terry@lambert.org> To: phk@critter.tfs.com (Poul-Henning Kamp) Cc: joerg_wunsch@uriah.heep.sax.de, freebsd-hackers@FreeBSD.org Subject: Re: a question about boot-manager Message-ID: <199601311839.LAA10213@phaeton.artisoft.com> In-Reply-To: <4449.823082602@critter.tfs.com> from "Poul-Henning Kamp" at Jan 31, 96 11:03:22 am
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> > [bad144] > > > > > Let me add that if the sparing sectors were moved to the end of the > > > 'a' slice, it would have two effects: > > > > > b) The bad sector area could be grown at the expense of decreasing > > > the available swap in the 'b' slice following the sparing area. > > > > ...but only if the swap space physically follows the boot partition. > > Nothing mandates this. > > And who but Terry would care about optimizing something like bad144 > anyway ??? Hello... 1024 cylinder limit... hello... old hardware... hello... 1) Anyone who is forced to use BAD144 on non-translated disks; all of the AT&T 6386/33E systems that went to universities on their educational grant program have 300M untranslated ESDI drives. 2) Anyone who is using an EIDE controller that doesn't support sector sparing in hardware instead of BIOS and wants to install FreeBSD near the end of the disk, either by using FIPS on the existing single DOS partition, or by replacing one or more extended partitions and/or Linux. 3) Anyone who has sector sparing off on their SCSI drives so they can use spindle-sync with a ccd driver without losing rotations, so they have to substitute BAD144 or similar software sparing. I can think of serveral more rather esoteric applications. I do know that #1 in my list has personally bit me both at WSU and the UofU during FreeBSD installs (both were recipients of AT&T educational grants and now have a lot of old hardware). Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.
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