磁盤分區

增長磁盤
(1)查看新增長未分區磁盤
   df -h  例：/dev/sdb
(2)分區
   fdisk /dev/sdb
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)Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4):
Value out of range.
Partition number (1-4): 1
First cylinder (1-1044, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-1044, default 1044):
Using default value 1044

Command (m for help): p

Disk /dev/sdb: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 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: 0x36e837d6

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1        1044     8385898+  83  Linux

Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
(3)重讀分區表 reboot/partprobe
(4)格式爲ext4格式
mkfs -t ext4 /dev/sdb1
(5)掛載。。。開機後消失，要設置開機自動掛載
mount /dev/sdb1 /share
查看 df -h
(6)獲取UUID
dumpe2fs  /dev/sdb1 |grep UUID
(7)開機自動掛載
vim /etc/fstab
UUID=f6efa9ab-dcd2-4976-9cd2-5e0233d4cd14 /share  ext4  defaults        1 2