# Lambda Quad: Disable Secure Boot

**URL:** <https://deeptalk.lambda.ai/t/lambda-quad-disable-secure-boot/392>\
**Category:** Technical Help\
**Created:** [July 20, 2018, 11:42pm UTC](https://deeptalk.lambda.ai/t/lambda-quad-disable-secure-boot/392 "2018-07-20T23:42:47Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![mpb](https://avatars.discourse-cdn.com/v4/letter/m/ed8c4c/32.png) [@mpb](https://deeptalk.lambda.ai/u/mpb)\
**Post date:** [July 20, 2018, 11:42pm UTC](https://deeptalk.lambda.ai/t/lambda-quad-disable-secure-boot/392/1 "2018-07-20T23:42:47Z")

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- Reboot machine.
- As machine boots, repeatedly pressing F2.
- Once UEFI BIOS Utility displays, press F7. A new menu will pop up.
- Under “Boot” tab, scroll down and select “\> Secure Boot” option
- Ensure that the “OS Type” dropdown is set to “Other OS”
- Under “\> Key Management”, select “Delete PK” and hit “Yes” to “Confirm deletion of ‘PK’ from NVRAM”
- Press F10 and hit “OK” to confirm that all changes should be saved. The machine will reboot.
- You’re done!

**A visual description of the instruction described above:**  
Reboot machine. As the machine boots, repeatedly pressing F2 to bring up the UEFI BIOS Utility, which looks like:

 ![IMG_5937](https://us1.discourse-cdn.com/flex019/uploads/deeptalk/original/1X/fbdd7967788596988d380df74714b9280aedecba.JPG)

From here, press F7 and navigate to the “Boot” tab. Find the “Secure Boot” option.

 ![IMG_5940](https://us1.discourse-cdn.com/flex019/uploads/deeptalk/original/1X/7aae2a4b9f5a1227e0f344b72bb26dee7dd48132.JPG)

Under the “Secure Boot” option, ensure that the “OS Type” dropdown is set to “Other OS”

 ![image_6483441](https://us1.discourse-cdn.com/flex019/uploads/deeptalk/original/1X/dcc9b195d80468b0a907f882fc2d16c61ddc55f8.JPG)

Under “\> Key Management”, select “Delete PK” and hit “Yes” to “Confirm deletion of ‘PK’ from NVRAM”

 ![IMG_5888](https://us1.discourse-cdn.com/flex019/uploads/deeptalk/original/1X/317c37ed9508e0b69b2746816aef38c275b9ff3a.JPG)

Press F10 and hit “OK” to confirm that all changes should be saved.

 ![IMG_5890](https://us1.discourse-cdn.com/flex019/uploads/deeptalk/original/1X/7b17a6cdebdd44314ae295c4c577275d6058c98c.JPG)

Machine will reboot.