Linux using the fdisk tool to create partitions

When there is still a lot of space on the Linux system hard disk, we can use the fdisk tool to partition the system to meet individual needs, so how to use the fdisk tool? The following small series will introduce you to the method of using Linux to create partitions. Interested friends can come to understand.

First check the hard disk information

fdisk -l if there is space left on the hard disk can be partitioned

[root @ bogon Desktop] # fdisk -l

Disk /dev/sda: 85.9 GB, 85899345920 bytes

255 heads, 63 sectors/track, 10443 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes< Br>

Sector size (logical/physical): 512 bytes /512 bytes

I/O size (minimum/optimal): 512 bytes /512 bytes

Disk identifier: 0x000471ad< Br>

Device Boot Start End Blocks Id System

/dev/sda1 * 1 26 204800 83 Linux

Partition 1 does not end on cylinder boundary.

/Dev/sda2 26 3851 30720000 83 Linux

/dev/sda3 3851 4106 2048000 82 Linux swap /Solaris

/dev/sda4 4106 10444 50912256 5 Extended

/dev/Sda5 4106 10444 50911232 83 Linux

Disk /dev/sdb: 21.5 GB, 21474836480 bytes

255 heads 63 sectors/track, 2610 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes /512 bytes

I/O size (minimum/optimal): 512 bytes /512 bytes

Disk identifier: 0x00000000

#From the above, the /dev/sda space has been used up, /dev/sdb is not used.

Let's partition /dev/sdb

[root@bogon desktop]# fdisk /dev/sdb

Device contains neither a valid DOS partition table, nor Sun , SGI or OSF disklabel

Building a new DOS disklabel with disk identifier 0xfaa2aa49.

Changes will remain in memory only, until you decide to write them.

After that, Of course, the previous content won‘t be recoverable.

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

WARNING: DOS-compatible mode is deprecated. It’s strongly recommended to

switch off the mode (command ‘c’) and change display units to

sectors (command ‘u’).

Command (m for help): m

Command action

a toggle a bootable flag

b edit bsd disklabel

c Toggle the dos compatibility flag

d delete a partition

l list known partition types

m print this menu

n add a new partition

o create a new empty DOS partition table

p print the partition table

q quit without saving changes

s create a new empty Sun disklabel
< t> change a partition‘s system id

u change display/entry units

v verify the partition table

w write table to disk and exit

x extra functionality (experts only)
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