On Fri, Mar 30, 2007 at 02:50:31AM -0000, John Levine wrote: > I set up my laptop to dual boot between [EMAIL PROTECTED] and FreeBSD. When I > first set it up I made the partitions the same size, but since then I > found I do a lot more with FreeBSD so I'd rather give it more space. > > So the last time I had to reinstall Windows from scratch, I made its > partition smaller. Now there's a big chunk of free space between > the two partitions. Should I expect the following to work? > > (back everything up, duh)
Yes. Use dump(8) to back up each of the FreeBSD filesystems. > Boot from a CD, change the partition table to make the FreeBSD partition > start right after the Windows partition Well, sort of maybe. Do you mean the partition table or slice table? First, I am guessing that you used some utility to officially shrink the slice (windows primary partition) where MS-Win is installed. You need to rebuild the slice table. You can do it in two ways. One would be just make a slice that covers all the space you want to use. The other would be leave the existing slices in place and make an extra one to use up the newly freed space. Either/both of these would be handled by the fdisk utillity. If you use sysinstall it sort of obscures the fact that it is using fdisk. Probably, since you have backed everything up and are sort of starting from scratch on FreeBSD, you want to do the first. So, delete the existing FreeBSD slice with fdisk (or in sysinstall) and then create a new one that encompasses all the left over space. > Use dd to move down the existing FreeBSD partition data so it starts > at the beginning of the new partition No, this is no good. You cannot reuse the old partition data on the new slice because the new slice is a different size. You need to create new partitions within the newly enlarged slice with bsdlabel (or if you use method 2, then you don't muck with anything in the old slice partition table. You just create a new one in the new slice, probably with just one partition - but don't bother with this. Use method 1) Use fdisk to delete that old FreeBSD slice and create a new one that includes both the newly free space and the old FreeBSD space and make sure the MBR is written (it should already be there actually) and the slice is marked as bootable. Lets say it becomes slice 2 on drive 0. You will need to create a config file to make the fdisk work easily. Probably sysinstall is easier for this. Then run bsdlabel to write the boot sector on the slice and then edit it. You can use sysinstall for this too since you are already in it from the fdisk, but it is easy to use directly as well. bsdlabel -w -B ad0s2 (or da0s2 if it is SCSI) This writes the boot sector. then bsdlabel -e as0s2 This causes an edit session to start. Edit only the parts below the line that has # size offset fstype etc Don't change the 'c:' line. Then do a newfs on each partition created in bsdlabel (except swap) and restore(8) the dumps and you are ready to go. Now, if you are not already at FreeBSD 6.2, then this would be the best time to just install it, csup everything including system, ports and docs to the latest and make build, install, reboot and merge, etc rather than bother moving over your old system as is. Of course you have made and checked the dumps so you can get back your own data. > > Use growfs to give the extra space to my /usr filesystem, which is at > the end of the existing partition No, you don't want to muck with growfs here. You are expanding a slice, not a filesystem. > > Or should I just back it all up to a USB disk, reformat, and restore it, > which will take considerably longer? Yup, this is what you should do and essentially what I describe above. If you can plug in and use a USB disk, so much the better. You do need to dump each filesystem separately, except don't bother with swap and /tmp, or course. Use dump(8)/restore(8) for the backups. dd will not get you what you want. ////jerry > > R's, > John > > > > _______________________________________________ > firstname.lastname@example.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "[EMAIL PROTECTED]" _______________________________________________ email@example.com mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"