Hi all. I was installing a new drive on my 5.2.1-p3 and I believe I made some mistake while using fdisk and bsdlabel.. in fact the partition table for my bootable disk has changed. this was my fdisk amrd0 before: web.dti.supsi.ch# cat fdisk.amrd0 ******* Working on device /dev/amrd0 ******* parameters extracted from in-core disklabel are: cylinders=4420 heads=255 sectors/track=63 (16065 blks/cyl) Figures below won't work with BIOS for partitions not in cyl 1 parameters to be used for BIOS calculations are: cylinders=4420 heads=255 sectors/track=63 (16065 blks/cyl) Media sector size is 512 Warning: BIOS sector numbering starts with sector 1 Information from DOS bootblock is: The data for partition 1 is: sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD) start 63, size 71007237 (34671 Meg), flag 80 (active) beg: cyl 0/ head 1/ sector 1; end: cyl 1023/ head 254/ sector 63 The data for partition 2 is: <UNUSED> The data for partition 3 is: <UNUSED> The data for partition 4 is: <UNUSED> and this is how it looks now.. web.dti.supsi.ch# fdisk amrd0 ******* Working on device /dev/amrd0 ******* parameters extracted from in-core disklabel are: cylinders=4420 heads=255 sectors/track=63 (16065 blks/cyl) Figures below won't work with BIOS for partitions not in cyl 1 parameters to be used for BIOS calculations are: cylinders=4420 heads=255 sectors/track=63 (16065 blks/cyl) Media sector size is 512 Warning: BIOS sector numbering starts with sector 1 Information from DOS bootblock is: The data for partition 1 is: sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD) start 0, size 70766325 (34553 Meg), flag 0 beg: cyl 0/ head 0/ sector 1; end: cyl 308/ head 254/ sector 63 The data for partition 2 is: <UNUSED> The data for partition 3 is: <UNUSED> The data for partition 4 is: <UNUSED> as you can see, it is no longer bootable, and it doesn't start at sect 63 like before but at 0 How can I fix it? I was about to give the following command but thought I'd better ask first here... web.dti.supsi.ch# fdisk -B I expect the above to reinstall the boot code and to correct the partition table.. I expect I'll be able to give that command while the system and running and so the filesystem mounted. or if that doesn't work.. web.dti.supsi.ch# fdisk -B -f fdisk.conf.amrd0 also.. with the -t option the results are almost identical to the original state, but end cyl is different.. See.. is that important? web.dti.supsi.ch# fdisk -t -B -f fdisk.conf.amrd0 ******* Working on device /dev/amrd0 ******* fdisk: WARNING line 2: number of cylinders (4420) may be out-of-range (must be within 1-1024 for normal BIOS operation, unless the entire disk is dedicated to FreeBSD) parameters extracted from in-core disklabel are: cylinders=4420 heads=255 sectors/track=63 (16065 blks/cyl) Figures below won't work with BIOS for partitions not in cyl 1 parameters to be used for BIOS calculations are: cylinders=4420 heads=255 sectors/track=63 (16065 blks/cyl) Information from DOS bootblock is: 1: sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD) start 63, size 71007237 (34671 Meg), flag 80 (active) beg: cyl 0/ head 1/ sector 1; end: cyl 323/ head 254/ sector 63 2: <UNUSED> 3: <UNUSED> 4: <UNUSED> and here is the fdisk.conf.amrd0 file web.dti.supsi.ch# cat fdisk.conf.amrd0 # values extacted from old fdisk.amrd0 g c4420 h255 s63 p 1 165 63 71007237 p 2 0 0 0 p 3 0 0 0 p 4 0 0 0 a 1 Thank you for your help. -- Roberto Nunnari -software engineer- mailto:roberto.nunnari_at_supsi.ch Scuola Universitaria Professionale della Svizzera Italiana Dipartimento Tecnologie Innovative http://www.dti.supsi.ch SUPSI-DTI Via Cantonale tel: +41-91-6108561 6928 Manno """ fax: +41-91-6108570 Switzerland (o o) =======================oOO==(_)==OOo========================Received on Mon Mar 29 2004 - 22:28:46 UTC
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