title: Can't open /dev/sda2 exclusively. Mounted filesystem?
body: <pre><code>WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.
  
  
  Disk /dev/sda: 3999.7 GB, 3999688294400 bytes
  255 heads, 63 sectors/track, 486267 cylinders
  Units = cylinders of 16065 * 512 = 8225280 bytes
  Sector size (logical/physical): 512 bytes / 4096 bytes
  I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  Disk identifier: 0x00000000
  
     Device Boot      Start         End      Blocks   Id  System
  /dev/sda1               1      267350  2147483647+  ee  GPT
  Partition 1 does not start on physical sector boundary.
  /dev/sda2               1        2090    16785120   82  Linux swap / Solaris
  /dev/sda3               1      218918  1758456029+  8e  Linux LVM
  
  Partition table entries are not in disk order
  </code></pre>
  
  <p>Above is my "fdisk -l", my current problem is when I go and try to do "pvcreate /dev/sda2" it gives me "Can't open /dev/sda2 exclusively.  Mounted filesystem?" and I have been searching google for a while now trying to find a way to fix this. There is defiantly things I tried from google but none of them ended up working. </p>