4 Replies Latest reply on Jul 19, 2010 4:43 PM by TroyLT

    OSD error - code 21



      LDMS 8.7 SP5.  Getting error message when trying to deploy an image - *File PEBOOT.IMG could not be loaded. The error code is 21.*



      Any ideas?



        • 1. Re: OSD error - code 21
          Jared Barneck SupportEmployee

          Error 21 - Caused by a network timeout when transferring the winpe image file.


          Could be many reasons for the timeout.

          • 2. Re: OSD error - code 21
            Jared Barneck SupportEmployee

            Message was deleted by: rhyous because it was posted to the wrong thread

            • 3. Re: OSD error - code 21

              This error happens when the machine you are imaging is unable to download the peboot.img file from the PXE Representative.


              Most of the time this happens because the PXE Representative machine has a vpn client installed which modifies the MTU size on the NIC.


              Look in this reg key:




              On the PXE representative, set the MTU value to 1500 for each network interface. Ignore any interfaces that do not specify an MTU value.


              Also make sure the windows firewall isnt running on the pxe rep.


              Let me know how it goes.

              • 4. Re: OSD error - code 21



                I am having the same issue on a new machine fresh from the box with nothing on it, i have checked your suggestions below but to no avail??


                Any other ideas??