Partitioning

Disks

Setting/Listing disk UUIDs

blkid                           # List all
findfs UUID=<id>                # Find specific id
ls -l /dev/disk/by-uuid/<id>

uuidgen                         # New id
tune2fs -U <id> /dev/sda1       # Setting id

Where to find different partition types

/dev/disk/by-uuid      -> MBR partitions
/dev/disk/by-partuuid  -> GPT partitions

Bootloader

UEFI Secure Boot

Diagnose with

efibootmgr -v

initramfs Update

update-initramfs -u

Grub Config Update

update-grub

Misc

• Convert ext2 to ext3:

  tune2fs -j /dev/hda1
  

• Convert ext3 to ext4:

  tune2fs -O extents,uninit_bg,dir_index /dev/sda1
  

• Determine Inode Count:

  tune2fs -l /dev/sda1 | grep Inode
  

• Disable ext4 barriers: Add “barrier=0” to the mount options.