Melakukan pengecekan blok disk
root@myhost:~ # lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 931.5G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 930.5G 0 part
└─md127 9:127 0 930.4G 0 raid1
├─centos_myhost-root 253:0 0 52G 0 lvm /
├─centos_myhost-swap 253:1 0 10G 0 lvm [SWAP]
├─centos_myhost-home 253:2 0 816.4G 0 lvm /home
└─centos_myhost-var 253:3 0 52G 0 lvm /var
sdb 8:16 0 931G 0 disk
└─sdb1 8:17 0 930.5G 0 part
└─md127 9:127 0 930.4G 0 raid1
├─centos_myhost-root 253:0 0 52G 0 lvm /
├─centos_myhost-swap 253:1 0 10G 0 lvm [SWAP]
├─centos_myhost-home 253:2 0 816.4G 0 lvm /home
└─centos_myhost-var 253:3 0 52G 0 lvm /var
sdc 8:32 0 7.3T 0 disk
├─sdc1 8:33 0 128M 0 part
└─sdc2 8:34 0 7.3T 0 part
sr0 11:0 1 1024M 0 rom
root@myhost:~ #Copy disk menjadi file image (di copy ke hdd external)
root@myhost:~ # mkdir /data/image-myhost root@myhost:~ # root@myhost:~ # dd if=/dev/sda of=/data/image-myhost/myhost-image-sda.img bs=4M