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

code is as follows

&nbs P;

[root@test ~]# lsblk name      & nbsp;                 MAJ:MIN RM    SIZE RO TYPE mountpoint sr0                           11:0    1   1024m  0 rom  sda                            8:0    0      8g  0 Disk ├─sda1                         8:1&NBsp;   0   500m  0 part/boot └─sda2                         8:2     0   7.5g  0 part  ├─volgroup-lv_root (dm-0) 253:0    0   6.6G& nbsp 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

The code is as follows
[Root@test ~]# Mount/dev/sdb/disk

Mount:you must specify the filesystem type

3) Format the disk

code is as follows

&nbs P;

[root@test ~]# mkfs.ext3/dev/sdb mke2fs 1.41.12 (17-may-2010) /dev/sdb is entire device, not just one partition! Do 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 the first block of data =0 Maximum filesystem blocks=2147483648 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   is writing to the Inode table: Completing                              Creating journal (32768 Blocks): Completing Writing superblocks and filesystem accounting information: Completing   This filesystem is automatically checked every mounts or 180 days, whichever comes and first.  use Tune2fs-c Or-i to override. [root@test ~]#

4) Successful Mount

The code is as follows
[Root@test ~]# cd/disk/ [Root@test disk]# ls Lost+found

5) Increase boot boot

code is as follows	&nbs P;
tmpfs          & nbsp;       /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