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This article mainly explains the "linux greater than 2T disk how to use GPT partition", the article explains the content is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in depth, together to study and learn "linux greater than 2T disk how to use GPT partition" bar!

In linux, we can first convert large-capacity disks to gpt format. Because the disk in gpt format is equivalent to the original mbr disk with only the first 16 bytes of 4 partition table, and the other is similar to the extended partition, the real partition table is after 512 bytes, so there is no limit of four primary partitions for the gpt disk table.

To manipulate the gpt disk partition table, we will use the powerful parted command.

Example: commonly used parted command

# parted / dev/sdb

Gnu parted 1.8.1

Using / dev/sdb

Welcome to gnu parted! Type 'help' to view a list of commands.

(parted) mklabel gpt

Format mbr disks as gpt

(parted) mkpart primary 0 100

Divide a primary partition with a starting position of 0 and a size of 100m

(parted) mkpart primary 100 200

Divide a primary partition with a starting position of 100m and a size of 100m

(parted) mkpart primary 0-1

Divide all spaces into one zone

(parted) print

Print the current partition

(parted) quit

Some commands that may also be used

(parted) mklable msdos

If it's the other way around. Convert a gpt disk to a mbr disk

After dividing the partition in this way, you also need to use mkfs.ext3 to format

# partprobe

# mkfs.ext3-f / dev/sdb1

Let's do this in practice:

Take redhat 5 as an example:

Parted / dev/sdb mklabel gpt . Convert to gpt.

Parted / dev/sdb mkpart primary 0 1000000 creates a 1t partition.

Mkfs-t ext3 / dev/sdb1

Mount / dev/sdb1 / mnt/b

In this way, partition b of the large disk is hung under the mnt directory of the linux system.

Power on and mount on your own

Vi / etc/fstab

/ dev/sdb1 / mnt/b auto defaults 0 0

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