[gentoo-user] backup sanity check

[Adam Carter]

This is to backup my laptop from boot cdrom - how does it look?

File systems;
/dev/sda1 - /boot
/dev/sda2 - swap
/dev/sda3 - /

So to backup;
1. Get MBR (grub and partition table): dd if=/dev/sda
of=/otherdisk/sda-mbr.bin bs=512 count=1
2. Get /boot: dd if=/dev/sda1 of=/otherdisk/sda1.bin
3. Get /: dd if=/dev/sda3 | gzip | dd of=/otherdisk/sda3.bin.gz

Then too restore onto new disk;
1. Restore MBR: dd if=/otherdisk/sda-mbr.bin of=/dev/sda
    - no bs or count parameters required?
2. Restore /boot: dd if=/otherdisk/sda1.bin of=/dev/sda1
3. Restore /: dd if=/otherdisk/sda3.bin.gz | gunzip | dd of=/dev/sda3
4. Setup swap partition: mkswap /dev/sda2
5. Boot system

Caveat is the the new disk must be big enough to fit sda1/2/3.