[root@localhost ~]# fsck -t ext2 /dev/hdd1
fsck 1.39 (29-May-2006)
e2fsck 1.39 (29-May-2006)
fsck.ext2: Device or resource busy while trying to open /dev/hdd1
Filesystem mounted or opened exclusively by another program?
[root@localhost ~]# man vgdisplay
Formatting page, please wait...
[root@localhost ~]# vgdisplay
  /dev/hda: open failed: No medium found
  --- Volume group ---
  VG Name               VolGroup00
  System ID
  Format                lvm2
  Metadata Areas        2
  Metadata Sequence No  3
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                2
  Open LV               2
  Max PV                0
  Cur PV                2
  Act PV                2
  VG Size               484.25 GB
  PE Size               32.00 MB
  Total PE              15496
  Alloc PE / Size       15496 / 484.25 GB
  Free  PE / Size       0 / 0
  VG UUID               vxhQT4-STBh-DTkA-1RtH-dE1s-XFF4-dmXqeO

[root@localhost ~]# mkfs.ext2 /dev/hdd1mkfs.ext2 /dev/hdd1
[root@localhost ~]# mkfs.ext2 /dev/hdd1
mke2fs 1.39 (29-May-2006)
/dev/hdd1 is apparently in use by the system; will not make a filesystem here!
[root@localhost ~]# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                     491363856   3718344 462283080   1% /
/dev/hdc1               101086     17267     78600  19% /boot
tmpfs                   127792         0    127792   0% /dev/shm
[root@localhost ~]#