[1vuio0pswjnm7]

It appears the authors assume the user will choose an SD card as the rootfs. Another alternative is to run the RPi with a tmpfs mounted directory as the rootfs and use the SD card as tertiary storage. This way I do not have to worry as much about the quality and condition of the SD card. To conserve RAM, I need the bootloader, kernel and the "always-installed" userland to be relatively small. With NetBSD, I can usually fit this all in under 20MB, leaving the rest of RAM as free tmpfs space to use however I wish. If I need to use some large Go binary for some specific task, I install it after boot in the free space. Then I remove it when the task is completed. Another alternative is to put these larger programs in a compressed filesystem such as cloop or squashfs, stored as a file on the SD card. NetBSD allows me to mount cloop2 filesystems read-only from tertiary storage. https://man.netbsd.org/vndcompress.1