Re: load kernel from different media
Sergio de Almeida Lenzi wrote: Em Qua, 2009-07-01 às 22:40 +0100, Chris Whitehouse escreveu: Yes you can. put your kernel (the one that works) on a DVD/CD assume that your rootfs on the HD is on ad0s1a, /usr is on /dev/ad0s1e with all the /boot directory. than boot from dvd/CD with the HD on the machine too. on the startup, hit 6 (number 6). than type: set vfs.root.mountfrom="ufs:ad0s1a" boot -s the machine will boot from the CD (with the kernel on the CD) than will mount the filesystem / (root) using ufs and the device /dev/ad0s1a once boot, you can mount the / rw. mount -o rw /dev/ad0s1a /mnt mount /dev/ad0s1e /usr than. export PATH=/mnt/sbin:/mnt/bin:/usr/sbin:/usr/bin mount -t cd9660 /dev/acd0 /cdrom cd /cdrom tar cf - boot | tar -xpvf - -C /mnt === edit /mnt/fstab to match the /(root) fs . ==fstab= /dev/ad0s1a/ufsrw11 = fastboot the machine will reboot and boot happy on the hd hope it can help ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org" Hi sergio thanks for your reply. I've been playing around with bootable pen drives cd's and hard disks with varying degrees of breakage :) however now i"ve found the workaround for the original problem which is simply to disable firewire in the BIOS. cheers Chris ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: load kernel from different media
Em Qua, 2009-07-01 às 22:40 +0100, Chris Whitehouse escreveu: Yes you can. put your kernel (the one that works) on a DVD/CD assume that your rootfs on the HD is on ad0s1a, /usr is on /dev/ad0s1e with all the /boot directory. than boot from dvd/CD with the HD on the machine too. on the startup, hit 6 (number 6). than type: set vfs.root.mountfrom="ufs:ad0s1a" boot -s the machine will boot from the CD (with the kernel on the CD) than will mount the filesystem / (root) using ufs and the device /dev/ad0s1a once boot, you can mount the / rw. mount -o rw /dev/ad0s1a /mnt mount /dev/ad0s1e /usr than. export PATH=/mnt/sbin:/mnt/bin:/usr/sbin:/usr/bin mount -t cd9660 /dev/acd0 /cdrom cd /cdrom tar cf - boot | tar -xpvf - -C /mnt === edit /mnt/fstab to match the /(root) fs . ==fstab= /dev/ad0s1a/ufsrw11 = fastboot the machine will reboot and boot happy on the hd hope it can help ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
load kernel from different media
Hi all, I cannot boot my motherboard with the default kernel on 7.2-RELEASE (or any other iso's I have tried). It panics if device sbp is in the kernel. So far I've got things working by putting the hard disk in another machine, installed the OS and rebuilt a kernel without sbp, then returned the disk to my computer. That's ok for a one off install but this machine is supposed to be for messing around. Can I load a kernel from some other media? Eg boot from an install CD, interrupt the boot, load a modified kernel from a usb stick or installed hard drive and continue booting from the CD. At the boot prompt I can list disks with lsdev and I can load and unload a kernel from the media I booted from (obviously) but I can't see how to load a kernel from another disk. I checked man 8 loader and man 8 boot but couldn't see what I wanted, hopefully I didn't just miss it. If the answer is in there I would really appreciate a pointer. Thanks Chris ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
