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#SYSTEMRESCUECD CHECK HDD CONDITION HOW TO#
#SYSTEMRESCUECD CHECK HDD CONDITION PASSWORD#

#SYSTEMRESCUECD CHECK HDD CONDITION HOW TO#

dev/mapper/b1 /media/Backups ext4 rw,suid,dev,exec,auto,user,async,relatime 0 2 How to restore from a backup a set of files what was recently changed Beside the normal passphase to open the disk, we'll create a random key and then use it to unlock the disk after /root is mounted with it's own passphrase:ĭd if=/dev/urandom of=/root/.keyfiles/luks_backups bs=1024 count=4Ĭryptsetup luksAddKey /dev/sdi1 /root/.keyfiles/luks_backupsĮcho "b1 UUID=$(sudo blkid -s UUID -o value /dev/sdi1) /root/.keyfiles/luks_backups luks" > /etc/crypttab

Mkfs.ext4 -m 0 -L Backups /dev/mapper/b1 (-m 0 removes reserved blocks (i.e. set to 0%), since your system's livelihood does not depend on the empty space on this disk)

1 (to set it as the 1ST primary partition).

p (to specify it as a PRIMARY partition).

n (create a new partition table and a partition).

Create the partition table (you know all your existing data on the disk will be gone, right?) To see the setup run lsblk.Įnough with theory. Partition table -> LUKS -> LVM -> partition tables. Then it sets up LVM on LUKS, by creating creates a physical volume, a volume group and two logical volumes, root and swap that contain the appropriate file systems. It creates the partition table, two unencrypted partitions (/boot and /boot/efi), one encrypted LUKS partition. The first way seems to be more compatible with the existing linux disk tools. An alternative is to have LUKS on the raw disk and then have partitions under it i.e LUKS -> MS-DOS partition table -> ext4. it will be like this: MS-DOS Partition table -> Luks -> ext4. As far as the disk layout goes, LUKS will be set up on a partion, then a file system will be created on LUKS. The idea is to use the main encrypted root partition to store the key for the backup disk. Udisksctl unmount -b /dev/mapper/x How to set up an encrypted backup disk to mount automatically at system boot Udisksctl dump | grep Configuration | grep tab Udisksctl dump | grep -E "(PreferredDevice|IdLabel)"

#SYSTEMRESCUECD CHECK HDD CONDITION PASSWORD#

Provide the current user password (not luks) This is a command line way to mount the device like KDE/Dolphin does it in GUI

Sudo mount -o loop,exec /path/to/systemrescuecd-x86-x.y.z.iso /media/temp How to create a bootable linux rescue USB stickĭont use isohybrid, it messes up the partition table Sync echo 3 | sudo tee /proc/sys/vm/drop_cachesĬat /media/some-disk/temp-file | pv > dev/null Then flush the cache and and perform the opposite operation using the newly-created file: To monitor you can insert pv into the pipeline after gzip or send -USR1 to the last dd in the pipeline How to mount sshfs on KDE session startĬopy the ssh keys to allow password-less mounting, test, then add it as a script command to KDE's startup via System-Settings -> Startup and Shutdown -> AutostartĬat /dev/zero | pv > /media/some-disk/temp-file Ssh "dd if=/dev/sda | gzip -1 -" | dd of=image.gz Dd if=/dev/sda | gzip -1 - | ssh dd of=image.gz