Date: Tue, 20 Jul 1999 10:19:38 -0600 From: Brett Glass <brett@lariat.org> To: giffunip@yahoo.com Cc: chat@FreeBSD.ORG Subject: Re: Installing Linux (and bootblocks) Message-ID: <4.2.0.58.19990720101206.00be1a80@localhost> In-Reply-To: <379498AA.DA3685C@bachue.usc.unal.edu.co> References: <37931080.C5917A44@giovannelli.it> <XFMail.990718043632.conrads@home.com> <4.2.0.58.19990718101705.00ccb720@localhost> <4.1.19990718224838.01324160@194.184.65.4> <19990719134536.K65436@freebie.lemis.com> <19990719095612.41282@ns.int.ftf.net> <19990719172747.A72625@freebie.lemis.com> <37931080.C5917A44@giovannelli.it> <4.2.0.58.19990719231734.043bd460@localhost>
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At 10:41 AM 7/20/99 -0500, Pedro Fernando Giffuni wrote: >Brett Glass escribi=F3: > >=20 > > Yes, Red Hat will install in (and boot from) a logical drive in an= extended > > partition. This isn't that unusual; OS/2 has done it for years! In fact, > > it's a good way to go, since with a boot manager that understands this= scheme > > you can have up to 23 OSes co-resident on one machine. > >=20 >Oops.. I was going to say Brett was wrong, but I checked the OS/2 Warp 3 >documentation and there is an example of exactly this. It is evidently a >bootmanager trick, however OS/2's boot manger uses a partition for >itself, something really undesirable. It's a good way of preserving the boot manager in the event that another OS is installed. All you need to do is make the manager's primary=20 partition bootable again after the install, and the boot manager is in=20 control once more. If you can boot your OS from a logical drive in an= extended partition, there's no downside, since primary partitions are no lonber such= a=20 valuable commodity! There are other ways to go, such as creating a custom boot sector, but this is prone to problems. Too many OSes, such as NT, wipe out custom boot= sectors. And those sectors are sometimes needed for BIOS extension utilities that allow older machines to accept large hard drives. This may be why PowerQuest ships IBM's boot manager with PartitionMagic. >FWIW, I was unable to get a logical drive recognized by FreeBSD's >installer, our fdisk only sees slices (PC partitions) but not logical >drives in extended partitions. It would be great to be able to create a >logical drive for FreeBSD. Agreed! >Also, over in hobbes there is an ext2fs IFS for OS/2, I'll give a try on >changing it to UFS later on. That would be useful. It'd be nice to hop between OS/2 and BSD. --Brett Glass To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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