Backup restore on empty hdd

Hondro · 07-03-2006, 08:01 AM

Hi, i have a full system archive(slack 10.2) which i have made with this command:
# tar cvpzf /arj/system.tar.gz --directory / --exclude=proc --exclude=arj --exclude=tmp

My question is how to restore whole system in empty hdd(hdd have two partitions: ext3 and swap), the file system.tar.gz is written in CD?

raskin · 07-03-2006, 08:06 AM

Boot from CD, mount your hdd, cd to it and issue tar xzpf /system.tar.gz (or where it resides). You still will have to chroot to your hdd afterwise and reinstall bootloader (don't know what Slack uses now).

ledow · 07-03-2006, 08:54 AM

Slackware still uses lilo, so you'd have to chroot and re-run lilo. If you've substituted grub, you'll have to do a similar thing for that. Be careful, if you are moving the drives around in a computer, your lilo/grub entries may change (hda1->hdb1 etc.)

Hondro · 07-04-2006, 01:46 AM

I have watched man pages about chroot, but i did not understand what for is this command?

Hondro · 07-04-2006, 01:52 AM

Or can someone explain with more detais all this procedure?
i am using LILO
please

raskin · 07-04-2006, 02:08 AM

Chroot is giving you a shell for which named directory is /. So all paths to configuration and libraries, usually hardcoded as absolute paths in programs, change to paths relative to given dir. For example, lilo will go to /boot for kernel - and it will be on hdd, not rescue cd.

gbonvehi · 07-04-2006, 02:47 AM

It can't be simpler than: chroot = change root
That means, change the root partition (root = /)

Specifically from the man page:

Code:

SYNOPSIS
       chroot NEWROOT [COMMAND...]

DESCRIPTION
       Run COMMAND with root directory set to NEWROOT.

Want details? man chroot