acmebion.blogg.se - Systemrescuecd fsck

SYSTEMRESCUECD FSCK HOW TO
SYSTEMRESCUECD FSCK PASSWORD
SYSTEMRESCUECD FSCK PC
SYSTEMRESCUECD FSCK ISO

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.

SYSTEMRESCUECD FSCK HOW TO

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 FSCK 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 When you are finished, shut down the VM.Dd if=/dev/sda | gzip -1 - | ssh dd of=image.gz

If you are using a the systemrescuecd, go to the console. In the case of a regular SWITCHengines image, login using SSH. Openstack server rescue -image systemrescuecd VM

The rescue command adds the rescue image as boot device and boots: openstack server rescue -image 'Ubuntu Xenial 16.04 (SWITCHengines)' VM

SYSTEMRESCUECD FSCK ISO

Upload the iso file: openstack image create -file systemrescuecd-6.0.1.iso -disk-format iso -container-format bare -min-ram 800 -property hw_cdrom_bus=scsi systemrescuecd Rescue Boot We will need an image file of the rescue CD, i.e. Example of such a system: (some more explanations: ). There may be more complicated cases where you want to use a specialized repair system. This can be a temporary VM that you can throw away afterwards. Attach it to a different VM as an additional disk to do the repair work. When the problematic root disk is an OpenStack volume, then you can remove the VM but keep the volume. when you look at an Ubuntu system, it is often easiest to just use a fresh Ubuntu system launched from a standard SWITCHengines image. Rescue Systemĭepending on the broken system and the repair work that needs to be done, choose a suitable rescue system. Similarly you can dismount the problematic hard drive and attach it to a different PC, repair the problem and put it back. You insert a rescue CD, boot from it and repair the problem on the hard drive.

SYSTEMRESCUECD FSCK PC

Think of a PC that does not boot, but it has a CD drive.