今天自己的虛擬機磁盤用完成，於是想加一磁盤，當掛載時發現報錯you must specify the filesystem type。(注：我的系統環境是lcentos6.3裝在virtualbox的虛擬機)。
原來是因為該磁盤沒有格式分區導致的於是有了以下操作：
1)先查看一下當前的系統情況，新加的盤是sdb
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[root@test ~]# lsblk
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NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
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sr0 11:0 1 1024M 0 rom
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sda 8:0 0 8G 0 disk
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├─sda1 8:1 0 500M 0 part /boot
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└─sda2 8:2 0 7.5G 0 part
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├─VolGroup-lv_root (dm-0) 253:0 0 6.6G 0 lvm /
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└─VolGroup-lv_swap (dm-1) 253:1 0 992M 0 lvm [SWAP]
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sdb 8:16 0 8G 0 disk
2)嘗試掛載，報錯
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[root@test ~]# mount /dev/sdb /disk
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mount: you must specify the filesystem type
3)格式化該磁盤
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[root@test ~]# mkfs.ext3 /dev/sdb
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mke2fs 1.41.12 (17-May-2010)
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/dev/sdb is entire device, not just one partition!
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無論如何也要繼續? (y,n) y
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文件系統標簽=
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操作系統:Linux
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塊大小=4096 (log=2)
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分塊大小=4096 (log=2)
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Stride=0 blocks, Stripe width=0 blocks
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524288 inodes, 2097152 blocks
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104857 blocks (5.00%) reserved for the super user
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第一個數據塊=0
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Maximum filesystem blocks=2147483648
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64 block groups
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32768 blocks per group, 32768 fragments per group
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8192 inodes per group
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Superblock backups stored on blocks:
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32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632
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正在寫入inode表: 完成
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Creating journal (32768 blocks): 完成
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Writing superblocks and filesystem accounting information: 完成
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This filesystem will be automatically checked every 27 mounts or
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180 days, whichever comes first. Use tune2fs -c or -i to override.
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[root@test ~]#
4)掛載成功
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[root@test ~]# cd /disk/
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[root@test disk]# ls
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lost+found
5)增加開機啟動
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tmpfs /dev/shm tmpfs defaults 0 0
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devpts /dev/pts devpts gid=5,mode=620 0 0
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sysfs /sys sysfs defaults 0 0
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proc /proc proc defaults 0 0
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/dev/sdb /disk ext3 defaults 0 0
