Re: How to make a rescue disk ?
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]
Re: How to make a rescue disk ?
hi ya bruno On Tue, 25 Oct 2005, Bruno Costacurta wrote: On Sunday 23 October 2005 09:13, Alvin Oga wrote: Thanks Alvin for all these details. I decided to 'keep it simple' and will try a Knoppix. simple is most always the best way to go c ya alvin -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: How to make a rescue disk ?
On Tue, 25 Oct 2005 06:14:01 + Bruno Costacurta [EMAIL PROTECTED] wrote: I'm looking for procedure / howto about creating rescue CD disk. SNIP Thanks Alvin for all these details. I decided to 'keep it simple' and will try a Knoppix. Bye, Bruno If I may be so bold you may want to try a bootable disk specially designed for recovery, even if it is not Debian based. My all time favorite is LNX-BBC (http://www.lnx-bbc.org/) because it fits on a small CD that is easy to carry around. However, recently I have been using the System Rescue CD (http://www.sysresccd.org/). It has many more tools than Knoppix or LNX-BBC, including backup utilities and a bootable FreeDOS option. It is a very handy tool for recovering all types of x86 operating systems. Good Luck, -- Bill Thompson [EMAIL PROTECTED] pgpuVat2f2i4k.pgp Description: PGP signature
Re: How to make a rescue disk ?
On Sunday 23 October 2005 10:51, Roberto C. Sanchez wrote: On Sun, Oct 23, 2005 at 10:07:31AM +, Bruno Costacurta wrote: Hello, I'm looking for procedure / howto about creating rescue CD disk. Thanks. Bruno Download either the full CD1 or the net install CD from the Debian installer page. Alternatively, keep a Knoppix or other live CD around, since if you boot one of those it will give you a fully functional system to use with many tools to repair whatever damage has befallen your system. -Roberto I downloaded the net install CD from Debian but my feeling is that it don't contain 'rescue' but only 'installer'. Is it possible ? Bye, Bruno -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: How to make a rescue disk ?
Bruno Costacurta [EMAIL PROTECTED] writes: I downloaded the net install CD from Debian but my feeling is that it don't contain 'rescue' but only 'installer'. Is it possible ? The net installer doesn't have a rescue image, but there is a way. http://wiki.debian.org/?DebianInstallerFAQ (look down the page some) I rescued a broken grub on my desktop with this method, just be careful about the naming of your partitions as they will be in /dev/discs I just mounted my partitions one by one and looked inside to find which was /boot -- -Angelina Carlton- orchid on irc.freenode.net [EMAIL PROTECTED] web:bzgirl.bakadigital.com -- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: How to make a rescue disk ?
On Mon October 24 2005 03:49 pm, Bruno Costacurta wrote: On Sunday 23 October 2005 10:51, Roberto C. Sanchez wrote: On Sun, Oct 23, 2005 at 10:07:31AM +, Bruno Costacurta wrote: Hello, I'm looking for procedure / howto about creating rescue CD disk. Thanks. Bruno Download either the full CD1 or the net install CD from the Debian installer page. Alternatively, keep a Knoppix or other live CD around, since if you boot one of those it will give you a fully functional system to use with many tools to repair whatever damage has befallen your system. -Roberto I downloaded the net install CD from Debian but my feeling is that it don't contain 'rescue' but only 'installer'. Is it possible ? It is, I don't know why but there is no rescue mode on the debian install cd anymore. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
How to make a rescue disk ?
Hello, I'm looking for procedure / howto about creating rescue CD disk. Thanks. Bruno -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: How to make a rescue disk ?
On Sun, Oct 23, 2005 at 10:07:31AM +, Bruno Costacurta wrote: Hello, I'm looking for procedure / howto about creating rescue CD disk. Thanks. Bruno Download either the full CD1 or the net install CD from the Debian installer page. Alternatively, keep a Knoppix or other live CD around, since if you boot one of those it will give you a fully functional system to use with many tools to repair whatever damage has befallen your system. -Roberto -- Roberto C. Sanchez http://familiasanchez.net/~roberto pgplVTmMgctkZ.pgp Description: PGP signature
Re: How to make a rescue disk ?
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 -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: How to make a rescue disk ?
Bruno Costacurta wrote: Hello, I'm looking for procedure / howto about creating rescue CD disk. Thanks. Bruno With lilo comes mkrescue. mkrescue --iso puts rescue.iso in the dir. Then you burn that with cdrecord and you boot from that. mkrescue is a script. I change it a little, to show the label of the image on the menu, instead of just linux so that I know from what partition I cut the rescue CD. HTH H -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: How to make a rescue disk ?
On Sun, Oct 23, 2005 at 06:51:45AM -0400, Roberto C. Sanchez wrote: On Sun, Oct 23, 2005 at 10:07:31AM +, Bruno Costacurta wrote: Hello, I'm looking for procedure / howto about creating rescue CD disk. Thanks. Bruno Download either the full CD1 or the net install CD from the Debian installer page. When I tried this to rescue a system recently, and booted from Sarge CD1, it tried to install me a system. What would I have had to do to get it to rescue one instead? Alternatively, keep a Knoppix or other live CD around, since if you boot one of those it will give you a fully functional system to use with many tools to repair whatever damage has befallen your system. I succeeded with knoppix though. -- hendrik -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
