Post B0W9fiKc6axbPQXAdk by meluzzy@woof.tech
 (DIR) More posts by meluzzy@woof.tech
 (DIR) Post #B0W9fiKc6axbPQXAdk by meluzzy@woof.tech
       2025-11-21T14:15:24Z
       
       1 likes, 1 repeats
       
       I'm trying to install #NetBSD on a Raspberry Pi 400. The display gets a signal but doesn't show anything.
       
 (DIR) Post #B0W9fjaxPJczKPBjkm by AnachronistJohn@zia.io
       2025-11-22T04:16:28.910663Z
       
       1 likes, 1 repeats
       
       @meluzzy An easy way to get started is to download the image here:https://mail-index.netbsd.org/port-arm/2025/10/07/msg009440.htmlOr, if you want to start with a new image, download the Generic 64 bit image from here:https://nycdn.netbsd.org/pub/arm/Write it to an SD card, then mount the MS-DOS partition on it, then download to it and unzip on it the EFI from here:https://github.com/pftf/RPi4/releasesv1.50 came out less than a day ago, so I haven’t tried it, but I know that v1.42 works. You then need to boot the image, go in to the EFI menus, then set:Switch Default uSD/eMMC Routing: Arasan SDHCI -> EMMC2Disable “Limit RAM to 3GB”Set boot order to microSDI think that’d do it. The notes at the mail-index.netbsd.org link above should help.
       
 (DIR) Post #B0W9fkVg0QzwAJj2A4 by meluzzy@woof.tech
       2025-11-22T11:03:18Z
       
       2 likes, 1 repeats
       
       @AnachronistJohn Yayyy! it works! Thank you so much! I really didn't want to have to rely on a USB, those get too hot in the Pi.In the boot menu I reordered the devices so that the microSD goes first but I couldn't figure out where was the "Limit RAM to 3GB" option to disable it (/var/run/dmesg.boot only shows 2966MB available, it's missing 1024MB) or where to change the Arasan SDHCI -> EMMC2. Not sure if that last step is required anymore tho. (I'm using the v1.50 firmware with the generic arm64.img)edit: nevermind I found it. its on Device Manager > Raspberry Pi Configuration > Advanced Configuration
       
 (DIR) Post #B0W9fqAGyvRThfl1dI by meluzzy@woof.tech
       2025-11-21T14:19:40Z
       
       0 likes, 0 repeats
       
       wait...the config.text has no gpu_mem set...
       
 (DIR) Post #B0W9fqAcxbj3ilvJBY by meluzzy@woof.tech
       2025-11-21T14:16:48Z
       
       0 likes, 0 repeats
       
       I tried 2 different images but still, no luck.I wonder if I need to change something in the config.txt
       
 (DIR) Post #B0W9fxg5342p0Lh1gO by meluzzy@woof.tech
       2025-11-21T14:24:07Z
       
       0 likes, 0 repeats
       
       nevermind, still doesn't work