My best favorite disk partition table manipulation tools are
fdisk on Linux. However, for large disks,
fdisk (of the versions by this post is written) will just give up with a message suggesting GPT partition table format and using GNU
WARNING: The size of this disk is 6.0 TB (6001042391040 bytes). DOS partition table format can not be used on drives for volumes larger than (2199023255040 bytes) for 512-byte sectors. Use parted(1) and GUID partition table format (GPT).
If you continue using
cfdisk, you will only create msdos partition table and use only less than 2TB space.
parted‘s interface is not that easy to use at the first try. After some struggling with parted, I finally make a partition on the new 6TB RAID 0 storage array. Here is the process.
pc ~ # parted /dev/sdc GNU Parted 2.3 Using /dev/sdc Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) mklabel GPT Warning: The existing disk label on /dev/sdc will be destroyed and all data on this disk will be lost. Do you want to continue? Yes/No? Yes (parted) mkpart primary 2048s 100% (parted) q Information: You may need to update /etc/fstab.
Why “2048s” is used here? Please check this blog post.
For the command
mkpart primary 2048s 100%, an alternative command is
mkpart PARTITION_LABEL ext4 primary 2048s 100%
which makes a partition with label PARTITION_LABEL.
The partition can be easily accessed later at path
/dev/disk/by-partlable/PARTITION_LABEL which will be useful for writing
fstab entry or other usages that need to directly use a partition block device.
The new partition
/dev/sdc1 is created:
pc ~ # ls /dev/sd* /dev/sda /dev/sda1 /dev/sda2 /dev/sda3 /dev/sda4 /dev/sda5 /dev/sdb /dev/sdb1 /dev/sdc /dev/sdc1
Check the information again:
pc ~ # parted /dev/sdc print Model: ORICO H/ W RAID0 (scsi) Disk /dev/sdc: 6001GB Sector size (logical/physical): 512B/4096B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 6001GB 6001GB primary
parted: if you don’t want to use
parted, you may try
cgdisk which is a curses-based GPT manipulator that feel very similar to