# RPi 4 not booting, want Secure Boot

**URL:** <https://hub.mender.io/t/rpi-4-not-booting-want-secure-boot/7685>\
**Category:** General Discussions\
**Tags:** yocto, raspberry-pi-4\
**Created:** [February 18, 2025, 8:57am UTC](https://hub.mender.io/t/rpi-4-not-booting-want-secure-boot/7685 "2025-02-18T08:57:29Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![parag](https://avatars.discourse-cdn.com/v4/letter/p/a5b964/32.png) [@parag](https://hub.mender.io/u/parag)\
**Post date:** [February 21, 2025, 10:38am UTC](https://hub.mender.io/t/rpi-4-not-booting-want-secure-boot/7685/5 "2025-02-21T10:38:28Z")

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Thanks for suggestion @TheYoctoJester

1. Gave try with uart adapter boot was successfull, but problem now with login credential incorrect used default raspberrypi4-64 login:pi and passwd: raspberry ,also as “root” without password still unsuccessfull, as suggested in this post [here](https://hub.mender.io/t/not-able-to-login-on-yocto-image/926) .

2. As suggest generated the core-image-base still the device screen get blackout.

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