Date: Wed, 19 Oct 2011 16:19:21 -0400 (EDT) From: doug <doug@fledge.watson.org> To: freebsd-questions@freebsd.org Subject: Re: multi-boot (fixed) Message-ID: <alpine.BSF.2.00.1110191611530.78416@fledge.watson.org> In-Reply-To: <alpine.BSF.2.00.1110191415280.31411@oceanpt.safeport.com> References: <alpine.BSF.2.00.1110181751570.78096@oceanpt.safeport.com> <44hb3588my.fsf@lowell-desk.lan> <alpine.BSF.2.00.1110191127550.31411@oceanpt.safeport.com> <44pqhsu9v2.fsf@be-well.ilk.org> <alpine.BSF.2.00.1110191415280.31411@oceanpt.safeport.com>
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> On Wed, 19 Oct 2011, Lowell Gilbert wrote: > >> doug@safeport.com writes: >> >>> On Wed, 19 Oct 2011, Lowell Gilbert wrote: >>> >>>> doug@safeport.com writes: >>>> >>>>> I have a system with two physical disks with a version of FreeBSD >>>>> installed on each disk. With various 7.x systems I had: >>>>> >>>>> F1 disk1 on slices ads5x >>>>> F5 disk2 on slices ads6x >>>>> >>>>> I installed 8.2 on disk2, incorrectly saying leave the mbr alone. So >>>>> when I boot from the second disk I get >>>>> >>>>> F6 PXE >>>>> Boot: F1 >>>>> >>>>> I can then hit F1 or wait and all goes okay. I tried using sysinstall >>>>> to rewrite the FBSD boot manager but that not effect any change. Must >>>>> I rewrite the mbr on disk 1 also? >>>> >>>> That's what I would expect to have to do... >>> >>> Pre 8.2 the behavior the selected system just boot without the extra >>> message. I had a 7.0 and a 7.4 system installed. I replaced the 7.4 >>> system with 8,2 With the boot setup I understand the FreeBSD boot >>> manager would be on sector 0 track 0 of disk 1. The boot record for >>> disk 1 is in the first logical sector for the drive. The boot record >>> for disk 2 should be similarly placed on disk 2. >>> >>> What I think is missing is putting the boot manager on disk 2. If that >>> is the case, is there a way to do that without reinstalling? >> >> boot0cfg(8) from the system that does boot. >> Or boot in "rescue" mode from a CD (or other removable media) >> and use sysinstall. > > thanks This is a classic cast (I think) of RTFM. Thanks for hanging in with me. The correct answer is install the standard boot record on disk 2. I think I can interpert the handbook that way. I did this with sysinstall as my second attempt at boot0cfg seriously broke the system on disk 2. boot0cfg is left to me as homework. This is a case where I may be able to get from the code what I could not from the man page. I do not know if part of the different is the BIOS has raid0 build in which almost works. I just turned this off giving me two test systems.
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