ArcaOS Install Issue: Failed to restore A20 gate


 * ArcaOS 5.0.6
 * Installation Issue

ArcaOS can not be installed due to this error on the installation phase.


 * Explanation
 * It seems to be an issue related to UEFI CSM. The same error message shows on older MacBooks with a CSM in the UEFI firmware. Seems to be an issue on the "MemDisk" component.


 * Workaround:Remove the HDD device from that machine, install ArcaOS on a different machine with that HDD and reinstall the HDD back on the original machine.


 * Additional Comments
 * It seems this issue may be solved on ArcaOS 5.1 with formal UEFI support.

Links

 * Facebook Report
 * AN Ticket 3159