For a recent project, I needed to install LibreELEC/Kodi on a Raspberry Pi Compute Module 4 with built-in eMMC storage.
Because it's inconvenient to be swapping the Pi around from the embedded display I was using it in to my preferred carrier board I use for flashing Pis and interacting with their filesystems, I wanted to manage my LibreELEC install over SSH.
It seems like whatever documentation the LibreELEC Wiki used to have for remote SSH access is missing, and all I could find were vague references to enabling SSH during a GUI setup wizard. I don't remember seeing that.
But after many, many searches, I surmised it was possible to enable SSH by adding
ssh to the end of the line in the system's
cmdline.txt file, and rebooting. So I pulled the Pi, used
usbboot to mount the fat32 volume on my Mac, and opened
cmdline.txt and added
ssh. Then I popped the Pi back in the embedded display, and started it up.
Sure enough, I could now SSH in: