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How to delete OEM Partition

This post will cover how to delete an OEM Partition. OEM partitions can be made by Dell or Lenovo. If you use the GUI Disk Management tools you’ll notice you can’t delete the OEM Partition. In order to delete the OEM partition you are going to need to use a command line tool called Diskpart.

First of all this is probably what you are currently looking at:


If you hit “DELETE” on the OEM Partition you can’t delete it like other partitions. If you right click on the OEM partition you will notice you don’t have the same options.


Normally you’d see:


To delete the OEM partition you are going to need to hit “Windows Key” + “R”. This will open the run dialogue box. Type “diskpart” and hit “OK”.


This will open a black command prompt like window. Type “list disk”. This will display all the disks.


You can verify which disk you want to edit using the “Disk Management Tools”. The Disk management tools can be found by Right Clicking Computer and selecting “Management”.As you can tell from the first screen shot in this post the OEM partition is located on Disk 2.

You must now select the disk with the OEM partition on it. Again in my case it is “Disk 2”. To select the disk you must type “select disk 2”.


You can now type “list partition” to list all the partitions on the disk just in case you want to verify you absolutely have the right disk selected.


You must now select the partition. In my case it is “Partition 1”. To do this you must type the command “select partition 1”.


Now type “delete partition override”.


Once you do that you have officially removed the OEM partition on the drive! Congratulations!

187 Responses

  1. Thank you so much for this great help :)

  2. Vishal on March 29th, 2013 at 10:13 am
  3. Thank you verymuch….. sir

  4. yabesh on April 4th, 2013 at 1:25 pm
  5. Thanks man very cool and simple…. also i like to use cmd!

  6. saley on April 5th, 2013 at 12:07 pm
  7. Wooowwww… thanks a lot Mr.

    I had little bit tension about this before.

    It’s a very good tutorial for me… I have deleted my OEM Partition according to your instructions.


  8. Azeem on April 11th, 2013 at 11:28 pm
  9. Excellent – I wanted to use the original Dell C Drive as an additional non-bootable drive, so did not need/want the OEM partition.

    Very simple instructions, worked superbly, thanks very much indeed!

  10. Richard Wale on May 31st, 2013 at 10:19 am

    This really was a huge help, my SSD had crashed on my ASUS notebook and when I got it back I found an OEM partition that I was unable to uninstall, which left me with just little over 18gb of space. Not enough to install Windows. So thanks so much! You saved my SSD!

    -Jen Chambers

  12. Jen Chambers on June 3rd, 2013 at 12:17 pm
  13. Nicely written, Jared.
    very easy to follow.

  14. Chris on June 4th, 2013 at 9:02 pm
  15. Excellent instructions, thanks!

  16. Dave on June 30th, 2013 at 8:36 pm
  17. wow

    worked first time!

    thanks for this

  18. ifti on August 30th, 2013 at 4:02 am
  19. Is there a way to recover my data from OEM partition.

    I don’t know how but I accidently changed my 100 gb disk drive into an oem partition. I cannot delete the partition as it contains important documents n files.

  20. Samay on September 3rd, 2013 at 8:27 am
  21. Thanks man for sharing. Helped out.

  22. Carlos on September 5th, 2013 at 6:28 am
  23. HI
    great …….. can you help me in my problem ….

    I recover my dell inspiron with win 8 to factory image before recovery I had four drives C for OS, D for WinRE, F and G for my data. after recovery it is now showing only C, D and G as F. disk management tool is showing my previous F drive 146 GB as OEM partition with 96 GB free space amount similar to my old data . can I recover this OEM partition back with data ????????????? please need help

  24. Saqib on September 9th, 2013 at 10:28 am

  26. CHUNKY on September 16th, 2013 at 3:03 am
  27. Thanks

  28. MGM on May 16th, 2014 at 8:25 pm

  30. reymac on May 18th, 2014 at 2:26 am
  31. delete partition override does not work for me I’m afraid. I even tried convert basic first but got the reply that the disk is basis. Diskpart simply hangs when I enter delete partition override. Dell 15R running Win 8.1. No idea where to go from here.

  32. Kevin Coutts on November 2nd, 2014 at 10:30 pm
  33. Thanks I appreciate this post.. It was one of those.. UGH! I hate OEM partitions.. 😉

  34. Russ on November 7th, 2014 at 7:29 pm
  35. great guide thanks for the help

  36. me from the future on November 12th, 2014 at 1:42 pm
  37. khoda yaret

  38. basir on December 28th, 2014 at 11:27 am
  39. Merci, it’s works !

  40. Patate on January 5th, 2015 at 9:38 am
  41. Thank you so much, the instructions are clean and simple well done.

  42. Raymond on January 11th, 2015 at 8:43 pm
  43. Thank you!!!

  44. Dave on February 17th, 2015 at 5:42 pm
  45. Thank you so much after 3 days off goggling i came across you thank you so much

  46. Quintin on March 20th, 2015 at 8:36 am
  47. i deleted the oem partition but still cannot format my drive z on dell e6420. it still using about 12gb for something hidden.

  48. john joe on March 30th, 2015 at 7:35 pm
  49. you are a rock star!

  50. john on May 7th, 2015 at 6:24 pm
  51. after you delete your OEM HD, you can use it again the HD?

  52. RR Alquizar on July 1st, 2015 at 10:41 pm
  53. It solved my problem, simple but effective thanks

  54. roland on July 9th, 2015 at 2:08 am
  55. I got ‘ specified command or parameters not supported by this system’

    so I can’t do it this way

  56. Jens on July 13th, 2015 at 11:55 pm
  57. thanks succesfully

  58. EKo on July 25th, 2015 at 9:52 am
  59. Thanks. worked great. much appreciated.

  60. Allen on August 6th, 2015 at 10:23 pm
  61. I’ve been computing since the 70’s and knew how to use diskpart but not the exact sequence to kill oem partition. This guide was very handy for me today, even after 40 years in hi tech. Thanks much friend,


    PS: Of course, not my real email addy above.

  62. Steve on August 13th, 2015 at 7:33 am
  63. Thankyou Jared, great help for removing dell oem partition

  64. kev on November 12th, 2015 at 2:20 am
  65. Your information was the 5th site I had been to and was the most concise. I’m working on a Dell with Windows 10 so I’m not sure if this is why, but I had to delete the partition slightly differently. However, I was able to use your steps with slightly different wording.

    Instead of List Disk I had to type in List Volume to get my external hard drive to show up in the results. From there it was pretty much the same steps simply replacing disk with volume.

  66. TFuesh on December 12th, 2015 at 5:13 pm
  67. Thanks!!!

  68. Jim on December 28th, 2015 at 6:25 pm
  69. Hope you somehow have few more hours that I would have wasted without this great article.

  70. Baris on January 10th, 2016 at 12:12 pm
  71. Thanks so much for this. Worked a treat, why can’t Microsoft explain things this well?

  72. ninthlife on January 15th, 2016 at 8:00 am
  73. Thank you so much!

  74. Gozilla on January 30th, 2016 at 9:46 am

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