[root@host1 ~]# fdisk -l
Disk /dev/vda: 64.4 GB, 64424509440 bytes
255 heads, 63 sectors/track, 7832 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: 0x00078f9c
Device Boot Start End Blocks Id System
/dev/vda1 * 1 7833 62912512 83 Linux
Disk /dev/vdb: 214.7 GB, 214748364800 bytes -----未分區的磁盤
16 heads, 63 sectors/track, 416101 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
[root@host1 ~]# fdisk /dev/vdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x0c0e81af.
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): n
Command action
e extended
p primary partition (1-4)
p -----設置爲主分區
Partition number (1-4): 1
First cylinder (1-416101, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-416101, default 416101):
Using default value 416101
Command (m for help): w -----寫入
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@host1 ~]# fdisk -l
Disk /dev/vda: 64.4 GB, 64424509440 bytes
255 heads, 63 sectors/track, 7832 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: 0x00078f9c
Device Boot Start End Blocks Id System
/dev/vda1 * 1 7833 62912512 83 Linux
Disk /dev/vdb: 214.7 GB, 214748364800 bytes
16 heads, 63 sectors/track, 416101 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0c0e81af
Device Boot Start End Blocks Id System
/dev/vdb1 1 416101 209714872+ 83 Linux
[root@host1 ~]# mkfs -t ext4 -c /dev/vdb1
mke2fs 1.41.12 (17-May-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
13107200 inodes, 52428718 blocks
2621435 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
1600 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872
[root@host1 ~]# mount /dev/vdb1 /mnt
[root@host1 ~]# df -TH
Filesystem Type Size Used Avail Use% Mounted on
/dev/vda1 ext4 64G 3.3G 57G 6% /
tmpfs tmpfs 2.1G 0 2.1G 0% /dev/shm
/dev/vdb1 ext4 212G 63M 201G 1% /mnt