Hi

I have got two hard disk on my desktop one of them is called C for OS XP SP3 and other is called D for program files and Data

Recently whenever I restarted my PC I would have been experiencing the message below

Code:
  Checking file system on D :
  Type : NTFS
   
  One of your disks needs to be checked for consistency. You may cancel the disk check, but it is strongly recommended that you continue.
  
Windows will now check the disk.
   
  CHKDSK is verifying files (stage 1 of 3)
  File verification completed
   
  CHKDSK is verifying indexes (stage 2 of 3 )
  File verification for completed
   
  CHKDSK is verifying security descriptors (stage 3 of 3 )
  Security descriptors completed
   
   
  After that I could not write the whole message
What could be causing this problem ?

Thanks