分区都懂的:
fdisk /dev/sda
进入后 h 输出帮助信息:
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)
创建新分区 选n
First cylinder (2871-5221, default 2871): #此处让你选择新分区扇区的开始位置
Last cylinder or +size or +sizeM or +sizeK (2871-5221, default 5221): #选择结束扇区的位置,当然也可以输入+size(M/K/G) 直接指定新分区的大小,单位为K/M/G
当分区创建完毕,通过p 查看分区表
通过l 列出分区可所有类型:
Command (m for help): l
0 Empty 1e Hidden W95 FAT1 80 Old Minix bf Solaris
1 FAT12 24 NEC DOS 81 Minix / old Lin c1 DRDOS/sec (FAT-
2 XENIX root 39 Plan 9 82 Linux swap / So c4 DRDOS/sec (FAT-
3 XENIX usr 3c PartitionMagic 83 Linux c6 DRDOS/sec (FAT-
4 FAT16 <32M 40 Venix 80286 84 OS/2 hidden C: c7 Syrinx
5 Extended 41 PPC PReP Boot 85 Linux extended da Non-FS data
6 FAT16 42 SFS 86 NTFS volume set db CP/M / CTOS / .
7 HPFS/NTFS 4d QNX4.x 87 NTFS volume set de Dell Utility
8 AIX 4e QNX4.x 2nd part 88 Linux plaintext df BootIt
9 AIX bootable 4f QNX4.x 3rd part 8e Linux LVM e1 DOS access
a OS/2 Boot Manag 50 OnTrack DM 93 Amoeba e3 DOS R/O
b W95 FAT32 51 OnTrack DM6 Aux 94 Amoeba BBT e4 SpeedStor
c W95 FAT32 (LBA) 52 CP/M 9f BSD/OS eb BeOS fs
e W95 FAT16 (LBA) 53 OnTrack DM6 Aux a0 IBM Thinkpad hi ee EFI GPT
f W95 Ext'd (LBA) 54 OnTrackDM6 a5 FreeBSD ef EFI (FAT-12/16/
10 OPUS 55 EZ-Drive a6 OpenBSD f0 Linux/PA-RISC b
11 Hidden FAT12 56 Golden Bow a7 NeXTSTEP f1 SpeedStor
12 Compaq diagnost 5c Priam Edisk a8 Darwin UFS f4 SpeedStor
14 Hidden FAT16 <3 61 SpeedStor a9 NetBSD f2 DOS secondary
16 Hidden FAT16 63 GNU HURD or Sys ab Darwin boot fb VMware VMFS
17 Hidden HPFS/NTF 64 Novell Netware b7 BSDI fs fc VMware VMKCORE
18 AST SmartSleep 65 Novell Netware b8 BSDI swap fd Linux raid auto
1b Hidden W95 FAT3 70 DiskSecure Mult bb Boot Wizard hid fe LANstep
1c Hidden W95 FAT3 75 PC/IX be Solaris boot ff BBT
通过t设置分区类型: --> 选择要修改类型的分区,输入以上类型 82表示交换分区.
通过w将表写入磁盘并退出.
注意:这时新分区并没有生效,如果是RedHat 5以下版本,可以通过partprobe使分区表生效. partx -l /dev/sda ; parted print ; partprobe -s /dev/sda 命令都可以查看分区表
mkswap /dev/sdan 创建swap分区
当创建标签的时候遇到以下报错:
e2label: Bad magic number in super-block while trying to open /dev/sda8
Couldn’t find valid filesystem superblock.
提示不能找到有效的文件系统超级块.上图显示了块的结构
通过mke2fs /dev/sdan 对新分区上损坏的超级块进行恢复
再次检查e2fsck /dev/sdan
为分区创建标签 e2label /dev/sdan SWAP-sdan
将设备写入/etc/fstab中,时开机自动挂载.格式参照表中其他分区.
swapon /dev/sdan 指定交换分区的设备位置
mount -a挂载所有分区
free -m 查看swap分区是否挂载成功.
先写这么多!
