Chkdsk /r - How often?


  1. mtp
    Posts : 96
    Server 2012 R2, Windows 8.1 , W7 ultimate x64
       #1

    Chkdsk /r - How often?


    Hi,

    I recently had a hard disk go (WD Green 2TB) after about 3 years of 24/7 use. The disk that failed was used to store music and videos - no apps. There were no symptoms apart from my http software slowing down - which I attributed to network speeds and an ever increasing media library size. Then one day, I noticed that copying a large file to the drive was going very very slowly. The disk was only 60% full so that should not be an issue ... I did a bunch of network trouble shooting... to no avail... Finally I decided to run a chkdsk /r on the disk.

    It found lots of bad sectors.... (fortunately everything was backed up) I replaced the disk and everything speeded up dramatically...

    My question is... how often should I run chkdsk to discover disks that are failing? Especially considering chkdsk takes a long time to run (8 hrs for a 2 TB disk) and stresses the disk.
      My Computer


  2. Posts : 1,454
    Microsoft Windows 8.1 64-bit Professional
       #2

    Hello mtp,

    In my opinion there really isn't a "fixed time" for when to run it. It's just like the SFC /SCANNOW command, or even an anti virus scan - you run it either when you feel the need or when you feel that something is wrong (as in the situation that you described).

    I do however recommend running it at least once a month so that you are on the safe side and won't get any surprises.

    More info:
    How to run Disk Check in Windows 7
    How to read Event Viewer Logs for Disk Check


    Good luck,
    Nommy

      My Computer


  3. Posts : 10,455
    Microsoft Windows 7 Home Premium 64-bit Service Pack 1
       #3

    Alternatively, and much faster, display the s.m.a.r.t. data using Crystaldiskinfo.
      My Computer


  4. Posts : 19,384
    Windows 10 Pro x64 ; Xubuntu x64
       #4

    Agree. CrystalDiskInfo is quicker....just watch out for unwanted software during the installation. ...check those check boxes carefully
      My Computer


  5. Posts : 10,455
    Microsoft Windows 7 Home Premium 64-bit Service Pack 1
       #5

    I use the PortableApps version which is free from nasties.
      My Computer


  6. mtp
    Posts : 96
    Server 2012 R2, Windows 8.1 , W7 ultimate x64
    Thread Starter
       #6

    kado897 said:
    Alternatively, and much faster, display the s.m.a.r.t. data using Crystaldiskinfo.
    Thanks for the suggestion - I actually used crystal disk info to look at the smart data before i figured out what the problem was - the smart data showed the drive as healthy. The drive also passed WDs quick test.

    It was not until I ran the chkdsk /r that the bad sectors were identified and the bad sector count in smart were updated. Perhaps I should have said this in the original post, but i had been looking at the smart data on a fairly regular basis to monitor the health of my disks.

    It seems that regular reads and writes that fail are not enough to trigger a sector becoming marked as bad. On an empirical basis, only format, chkdsk /r and the specialised utilities do it...

    Thanks

    Mark

    edit: After running the chkdsk, smart correctly showed the problem
    Last edited by mtp; 09 Oct 2013 at 00:54. Reason: add info
      My Computer


  7. Posts : 10,455
    Microsoft Windows 7 Home Premium 64-bit Service Pack 1
       #7

    That's good to know.
      My Computer


 

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