Description:
I encrypt my root system, then i create /etc/crypttab and modify
/etc/fstab, But i don't know what should i boot my encrypt system.
this is my step to encrypt my root system:
1, create two partition , sda1 is used boot, sda2 is root system
2,encrypt sda2:
2.1, dd if=/dev/random of=/etc/root-key bs=1c count=32
2.2, cryptsetup -d /etc/root-key create root /dev/sda1
2.3, mkfs.ext4 /dev/mapper/root
2.4, mount /dev/mapper/root /mnt & cp -avx / /mnt
3, create /etc/crypttab ' root /dev/sda3 /etc/root-key cipher=aes'
4, modify /etc/fstab '#UUID ... ' replace to '/dev/mapper/root / ext3
defaults 1 1'
5, make initrd 'mkinitramfs' & mv ***.img to initrd.img
6, setting grub.cfg: linux ... root=/dev/mapper/root initrd /boot/initrd.img
reference:
https://www.linuxjournal.com/article/7743
http://www.linuxfromscratch.org/blfs/view/svn/postlfs/initramfs.html
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