On Sunday 23 October 2005 09:13, Alvin Oga wrote: > hi ya bruno > > On Sun, 23 Oct 2005, Bruno Costacurta wrote: > > I'm looking for procedure / howto about creating rescue CD disk. > > proceedure .. "think" :-) .. > - find out what hardware chipset is in your pc > - find out what kernel you're using > - save the kernel and /lib/modules/<kernel> > - save your partition info > - save your list of apps installed > - save your list of config files installed > - add dressing so that you can do something > ( bash, libc, networking, fs-check apps, ... ) > > - how much time will have you "rescue" the dead box ? > > 5min .. 5hrs .. 5 days .. would dictate how you implement > your rescue cd > > - depending on what you want to rescue .. existing > "rescue" cd's will not have your config files and setup > > - or do you want rescue to save a corrupt fs vs > a backup of your /home and config changes which > is not the same as rescue > > - booting the pc is not the same as rescue either > > how complicated do you want to get ... > - why start with the hardest way to rescue a system ? > > 0) dd if=/boot/vmlinuz of=/dev/fd0 > - as long as your kernel is 1.2MB and you have the network > modules you can always boot can get online > > 1) do a fancier boot floppy with ( lilo or grub or syslinux ) menu > - lots of howto's > > 2) stick a 2nd disk into the same system ... and mirror your boot info > and may as well copy your /home/bruno directories too > > 3) use raid ... in case hda dies ... your properly configured raid > will boot off hdc instead > > 4) make a bootable usb-stick ( more space than a floppy ) > this is the simplest "1 minute change" but assumes your > system supports usb-hdd-boot and your system has the usb > driver modules > > lilo -C /etc/lilo.hda.conf > --> change to boot=/dev/hda to boot=/dev/sda > > more tweeking (2 min) of menu.lst for "grub-install /dev/sda" > > 4) setup (pxe) network boot ... so that you always boot off the network > as long as the pxe server is running > > 5) use an existing "standalone" cdrom > - you're assuming the kernel on the cdrom supports your hw > or else it's worthless for rescuing your hardware > > 6) make your own standalone cdrom > - little more work ... but more fun > > - rescue cd needs initrd.gz and rootfs .... > and you'd need to make an iso of the whole thing > > hacking a existing knoppix is easy but is too big > of a rescue disk > > 7) test and retest from different failures > > 8) endless list with more variances and differences of how to boot it > > c ya > alvin
Thanks Alvin for all these details. I decided to 'keep it simple' and will try a Knoppix. Bye, Bruno -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
