Linux mount hard Drive error (you must specify the filesystem type)

Today's own virtual machine disk is completed, so I would like to add a disk, when mounted to find an error you must specify the filesystem type. (Note: My system environment is lcentos6.3 installed in VirtualBox virtual machine)

It turns out that the disk does not have a format partition resulting in the following actions:

1 First look at the current system situation, the new disk is SDB

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[Root@test ~]# Lsblk NAME maj:min RM SIZE RO TYPE mountpoint Sr0 11:0 1 1024M 0 rom SDA 8:0 0 8G 0 disk ├─SDA1 8:1 0 500M 0 part/boot └─sda2 8:2 0 7.5G 0 part ├─volgroup-lv_root (dm-0) 253:0 0 6.6G 0 LVM/ └─volgroup-lv_swap (dm-1) 253:1 0 992M 0 LVM [swap] SDB 8:16 0 8G 0 disk

2) try to mount, error

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[Root@test ~]# Mount/dev/sdb/disk

Mount:you must specify the filesystem type

3) Format the disk

The code is as follows

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[Root@test ~]# Mkfs.ext3/dev/sdb MKE2FS 1.41.12 (17-may-2010) /dev/sdb is entire device, not just one partition! You want to continue anyway? (y,n) Y File System label = Operating system: Linux Block size =4096 (log=2) Chunking size =4096 (log=2) Stride=0 blocks, stripe width=0 blocks 524288 inodes, 2097152 blocks 104857 blocks (5.00%) reserved for the Super user First block of data =0 Maximum filesystem blocks=2147483648 Groups block 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 Writing to Inode table: completing Creating journal (32768 Blocks): complete Writing Superblocks and filesystem accounting information: Complete This filesystem would be automatically checked every mounts or 180 days, whichever comes. Use Tune2fs-c or-i to override. [Root@test ~]#

4) Successful Mount

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[Root@test ~]# cd/disk/ [Root@test disk]# ls Lost+found

5) Increase boot boot

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TMPFS/DEV/SHM TMPFS Defaults 0 0 Devpts/dev/pts devpts gid=5,mode=620 0 0 Sysfs/sys Sysfs Defaults 0 0 PROC/PROC proc Defaults 0 0 /dev/sdb/disk ext3 defaults 0 0