ean365

Armbian recently merged and will be releasing (and backporting) a patched devicetree file for the Odroid C4 and HC4 that eliminates the second power-cycle "glitch" during boot. Hopefully this will fix at least one issue people have been reporting, where some HDDs (or other devices) do not react well to rapid power double-tap during boot. https://github.com/armbian/build/blob/main/patch/kernel/archive/meson64-6.19/board-odroid-sm1-regulators-boot-on.patch It will also be released (and likely backported) upstream in next Linux kernel release and/or fixes. Also, something else people have been reporting is the HC4 struggling to spin up two large HDDs at the same time. If you have an HDD with a "Power Up In Standby" (PUIS) setting, such as the Seagate IronWolf, then you can configure all non-system (non-boot) drives in this manner, and then mount and access them sequentially after the system has booted. Depending on how much power the HDDs use in regular operation, this might work to get both spun up and running. Theoretically, you could also access just one drive at a time and then place it back in standby before using the other drive. YMMV.

Hmmm. Never mind, maybe. I see that Armbian has it included here, but for some reason it was not installed automatically. https://github.com/armbian/build/tree/main/packages/bsp/odroid

A known issue with the Odroid XU4, HC1, and HC2 is that it (uboot?) does not properly park the hard disk heads before/during shutdown or power cycle/off. So, the disk drive is forced to emergency hard retract the heads when power is shutdown/cycled. This is of course a violent action for the HDD and should be avoided. Use this odroid.shutdown script and install into /lib/systemd/system-shutdown/. https://wiki.odroid.com/odroid-xu4/troubleshooting/shutdown_script Recommend adding to armbian for XU4 distros.