HP Chromebook 14a (DIRINBOZ) USB Installation disk is not recognising the emmc to partition too

Hey all,
My USB installation media wont recognise the emmc on the chromebook and ive tried different usb sticks, different linux distros and different usb ports and im generally lost for words on how to do it any help would mean a world to me as im stuck on how to do any of it

Howdy. Dirinboz has a note on the Chrultrabook docs about eMMC for you to check out. Supported Devices and Platforms | Chrultrabook Docs

Yea thanks for saying that but im not sure how to set it to boot partition to read the emmc could you help?

Not sure I’m qualified to answer so take this with a massive grain of salt. Searching for iommu=pt, found this image on reddit that looks like iommu would go in a grub file https://www.reddit.com/media?url=https%3A%2F%2Fi.redd.it%2Fgy9x0f8snt751.png
Known Issues | Chrultrabook Docs
Sounds like you may not be able to use the eMMC at all if your Chromebook 14A is AMD. You may have to do a full Linux install to either 1. SD Card 2. USB. 3. NVMe SSD. I’ve personally installed Debian on a USB before, not just a live session
edit: yes, was wrong. It means EFI and /boot stuff should be mounted on something like a USB instead when installing which is probably as weird as it sounds

There was a regression in newest Coreboot builds, should be fixed soon. See this thread for details: