Disk MBR partitioning in Linux--practice

Disk MBR partitioning in Linux--Practice of FDISK command syntax

FDISK (options) (parameters)

Options

-b <分区大小>  指定每个分区的大小-l    列出分区表信息-v                            显示版本信息

Parameters

Device files: e.g./DEV/SDA

Instance

Select the disks you want to manipulate:

[root@vathe ~]#fdisk /dev/sdb

Enter m to list the commands that can be executed:

Command (M forHelp):McommandAction A toggle a bootable flag B edit BSD DisklabelC Toggle the DOSCompatibility flagDDelete aPartition # Deleting partitionsLList knownPartition Types # shows the known partition typeM Print this menu # Displays the Help menuNAdd anew partition # Add partition o create A Span class= "Hljs-keyword" >new empty DOS partition table p print the partition table # view partition table Q quit without saving changes # do not save back Hu s  Create a new empty Sun disklabel t Span class= "Hljs-keyword" >change a partition ' s system ID # System ID of the table partition U change display/entry units v Verify the partition Table W write table to disk and exit # Save partition and exit X extra funct Ionality (experts only)             

To view the partition table:

Command (M forHelp):PDISK/DEV/SDB:10.7 GB,10737418240bytes255 heads,Sectors/track,1305 cylindersunits = CylindersOf16065 *512 = 8225280 bytesSector size (logical/physical): 512 bytes/512 bytes i/o size (minimum/optimal): 512 bytes/ 512 bytesdisk identifier:  0x48283ee0 Device Boot start end Blocks id system         

New Partition Table:

CommandAction#选择新增分区类型 E Extended#扩展分区 p Primary partition (1-4)#主分区p//type ppartition number (1-4): 1 //type 1First cylinder (1-1305, default 1): # select partition start cylinder Using default value 1 //Select default 1Last cylinder, +cylinders or +size{k,m,g} (1-1305, default 1305): + 1g  #设置分区大小 1g,+ means add after start,- To add a partition before the start point                

View confirmation that the partition was created successfully:

Command (M forHelp):PDISK/DEV/SDB:10.7 GB,10737418240Bytes # Total disk size10.7GB255 heads,Sectors/track,1305 Cylinders #255 heads, each with a track63 sectors,1305 cylindrical faces units = cylindersOf16065 *512 =8225280BytessectorSize (logical/physical): 512 bytes/512 bytes i/o size (minimum/optimal): 512 bytes/ 512 bytesdisk identifier:  0x48283ee0 Device Boot start end Blocks id system/dev/sdb1 1 132 1060258+ 83 Linux 
  build an extended partition  

Command (M for help): N
Command Action E Extended P primary partition (1-4) e partition number (1-4): 4 # partition number first cylinder (133-1305, default 13 3): 900
Last cylinder, +cylinders or +size{k,m,g} (900-1305, default 1305): +500m # Extended Partition 500M

在扩展分区中创建逻辑分区

Command (M for help): N

Command Action

L logical (5 or over)

P primary partition (1-4) L

First cylinder (900-964, default 900):

Using default value of cylinder, +cylinders or +size{k,m,g} (900-964, default 964): +100m # Logical Partition 100M

View a list of partitions

Command (M forHelp):PDISK/DEV/SDB:10.7 GB,10737418240bytes255 heads,Sectors/track,1305 cylindersunits = CylindersOf16065 *512 =8225280BytessectorSize (logical/Physical):512Bytes/512bytes/ oSize (minimum/optimal): 512 bytes/512 bytesdisk identifier: 0x48283ee0 Device Boot Span class= "Hljs-keyword" >start end Blocks id system/dev/sdb1 1 132 1060258+ 83 linux/dev/sdb4 900 964 522112+ 5  EXTENDED/DEV/SDB5 900 913 112423+ Span class= "Hljs-number" >83 Linux            

Save exit

help): w             # 保存退出The partition table has been altered!Calling ioctl() to re-read partition table.Syncing disks.

View

[[Email protected] ~]#lsblk NAME maj:min RM SIZE RO TYPE MOUNTPOINTsr011:013.7G0 ROM SDA8:00200G0 disk├─sda18:10200M0 Part/boot├─sda28:2020G0 Part/data├─sda38:3010G0 PART/HOME├─SDA48:401K0 Part├─sda58:502G0 Part [Swap]└─sda68:6 0  167.8G 0 part/sdb 8:16 0 10g 0 disk # Display partition success ├─SDB1 8:17 0 1g 0 part├─sdb4 8:20 Span class= "Hljs-number" >0 1k 0 part└─sdb5 8:21 0 109.8M 0 part             

Partition success, of course, to use disk, there are still two operations to use disk--to mount the disk in a specific directory (or file), and to format a partition.

Disk MBR partitioning in Linux--practice