Date: Tue, 11 Aug 1998 20:43:41 +0100 From: "David Larkin" <David.Larkin@DJL.co.uk> To: <David.Larkin@DJL.co.uk>, <FreeBSD-questions@FreeBSD.ORG> Cc: <hamellr@dsinw.com>, <djv@bedford.net> Subject: Re: Is FreeBSD still on disk ? How to boot :- Booting Default: F? Message-ID: <199808111941.MAA23481@hub.freebsd.org>
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I reported a problem I was having booting FreeBSD after a system crash destroyed W95 & boot manager ( see original report below) Thanks for the encouraging input from djv@bedford.net and Rick Hamell (hamellr@dsinw.com), but I have a few supplementary questions. > Can anyone confirm that > my FreeBSD installation is still there, and that the challenge > is how to boot it. > > I wrote a boot manager to the first disk (wd0), and now when I > boot I get the following > > F5 .... disk 2 > Default: F5 > F5 .... disk 2 > Default: F? > > what happens when you press F5? After pressing <F5> F5 .... disk 2 Default: F? djv@bedford.net commented ........................ djv> Hmm. Not bootable, or booteasy isn't cooperating. djv> Try booting a floppy, then you can try to access the disk djv> by mounting partitions and fsck'ing etc. Booting from floppy is OK, but could you advise further on mounting the partitions My understanding is limited here, but I've tried the following - boot floppy - go into Fixit - bring up shell (Alt F4) > mount /dev/wd1a /mnt > /dev/wd1a on /mnt : Incorrect superblock > mount /dev/wd1s4a /mnt > /dev/wd1s4a on /mnt : No such file or directory > mount /dev/wd1s4 /mnt > /dev/wd1s4 on /mnt : Device not configured Any help to interpret this information would be appreciated. Rick Hamell commented ..................... Rick> Looks like Windows 95 corrupted itself and took the partions with Rick> it. Your best bet would be to try to rebuild your partions using the Rick> exact same parameters you had before. At least make sure your FreeBSD Rick> partion is the same. Windows 95 will have to be reinstalled no matter Rick> what. Well, that's not exactly true, it might be saved but it would be Rick> best and far less time consuming to reinstall. I'm not concerned about the W95 installation, and I only intend rebuilding FreeBSD Does this mean make a new installation (sysinstall) and then partion the disk using the FDISK partition editor / Disklabel editor, as described in "The complete FreeBSD by Greg Lehey Second Edition" p57-62 Will this overwrite any files I have there, or will it be OK as long as I use the same partition sizes. If I use the wrong partition sizes, what happens ? ORIGINAL PROBLEM REPORT follows > I was running FreeBSD 2.2.5 and W95 happily on my machine. > wd0 contained W95, and wd1 contained FreeBSD > Suddenly while running W95, everything went "pop" and I wasn't > able to boot either. > So, booting from floppy, using the "fixit" option, and running > fdisk I get the following :- > > fdisk wd0 > *** working on device /dev/rwd0 *** > parameters extracted from in-core disklabel are: > cylinders=4095 heads=16 sectors/track=63 1008 blks/cyl) > Figure below won't work with BIOS for partitions not in cyl 1 > parameters to be used for BIOS calculations are: > cylinders=4095 heads=16 sectors/track=63 (1008 blks/cyl) > Media sector size is 512 > Warning: BIOS sector numbering starts with sector 1 > Information for partition 1 is: > <UNUSED> > Information for partition 2 is: > <UNUSED> > Information for partition 3 is: > <UNUSED> > Information for partition 4 is: > <UNUSED> > > fdisk wd1 > *** working on device /dev/rwd1 *** > parameters extracted from in-core disklabel are: > cylinders=4095 heads=16 sectors/track=63 1008 blks/cyl) > Figure below won't work with BIOS for partitions not in cyl 1 > parameters to be used for BIOS calculations are: > cylinders=4095 heads=16 sectors/track=63 (1008 blks/cyl) > Media sector size is 512 > Warning: BIOS sector numbering starts with sector 1 > Information for partition 1 is: > sysid 128, (Minix 1.1 ....... 1.4a) > start -61531, size 63 (0 Meg), flag 0 > beg: cyl 0/ sector 0/ head0; > end: cyl 0/ sector 1/ head1; > Information for partition 2 is: > sysid 0,(unused) > start 0, size 0 (0 Meg), flag d1 > beg: cyl 0/ sector 62/ head 251; > end: cyl 0/ sector 0/ head 0 > Information for partition 3 is: > <UNUSED> > Information for partition 4 is: > sysid 165, (FreeBSD/NetBSD/386BSD) > start 1, size 4127759 (2015 Meg), flag 80 > beg: cyl 0/ sector 2/ head 0; > end: cyl 1022/ sector 63/ head 15 > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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