On 04/25/2017 11:50 AM, Mr. Man-wai Chang wrote:
On 26/4/2017 12:44 AM, Mark Lloyd wrote:
On 04/25/2017 06:19 AM, Mr. Man-wai Chang wrote:

How do you do that easily? Must I always keep a recovery disc ready? If
so, wouldn't it make things more complex than MBR boot?

The old MBR method can always boot even after a CMOS reset.


What did you change in setup? Boot order? Secure boot?


I just wanna find out whether the UEFI boot entry would stay in the CMOS
after I clear the CMOS. Anyone tested it before?

I would expect that UEFI reads the GPT boot information from disk, just
like it reads the MBR boot information. In that case, a CMOS reset would
have no effect.

If it did, you'll still be able to boot since it'll give the disk drive
name.

Ib the case of MBR boot, no boot entry was stored in the CMOS, so
clearing the CMOS would not affect the booting process.

--
Mark Lloyd
http://notstupid.us/

"If we should put god in the Constitution there would be no room left
for man." [Robert G. Ingersoll]