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This can be used in an emergency to restore a corrupted file when the RCE will not boot into the Arch Linux OS.
The bootloader countdown must be enabled in order to boot back into Arch Linux.
Log into Connect to the RCE serial console
Reboot with the rescue disk option:
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When done using the rescue disk, reboot and enter the bootloader shell.
From the bootloader shell, boot into Arch Linux:
run sdboot_linux
Once booted into Arch Linux, restore previous boot behavior:
reboot_rce -t linux
If applying user firmware, add the -b 1 option.