单独用一个优盘。启动进入后
grub> setup_var 0x8DC 0x2
输入这个命令后显示如下:
--> GUID does not match expected GUID, taking it nevertheless...
expected a different size of the Setup variable (got 6473 (0x1949) bytes). Continue with care...
successfully obtained "Setup" variable from VSS (got 6473 (0x1949) bytes).
offset 0x8dc is: 0x01
setting offset 0x8dc to 0x02
grub>