![]() ![]() I discovered the latter a few days ago since I tried to debug weird symptoms a user was telling just to realize that weird things might happen when you insert the SD card within 10 seconds after boot.Īrmbian has even a user documentation (no worries, I added eMMC info just yesterday and it seems documentation is not updated at the usual documentation link) Now the bootloader might be read from eMMC but starts then the real OS on the SD card with sometimes weird results (kernel command line taken from the wrong OS installation leading to all sort of strange symptoms). ![]() Start the board without SD card and insert SD card after a few seconds. With the eMMC equipped boards another funny thing might happen. And check your SD card as outlined in out user documentation. Only way to know what's going on: Attach a serial console and watch for the output. If for example your card shows random read errors on the first blocks then exactly that might happen what you experienced: Sometimes boot from SD card (bootloader found/loaded), sometimes from eMMC. ![]() That means that H3 checks for the presence of an SD card and then for the presence of a bootloader there. The boot priority on all currently known H3 boards is always: SD card first then eMMC. Sometime the system start on debian and not Armbian. With the SD card inserted I sould start with Armbian, but not always. ![]()
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December 2022
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