Product Manual, SG-1000
2.9 The boot environment on eMMC is corrupted and it will not boot
from Micro-SD
If the boot environment is present on the eMMC but it is broken in some way, the SG-1000 may not be able to boot
from a Micro-SD card. In this case, with a bootable Micro-SD card installed, short the "SD BOOT" header using a
jumper (not provided). The "SD BOOT" jumper header is located next to the power connector. After reinstalling the
operating system, remove the Micro-SD card and the jumper.
2.9. The boot environment on eMMC is corrupted and it will not boot from Micro-SD
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