Cindy-Sue Causey a écrit : > > Was only a couple months ago that I found out that update-grub was at > least one thing about the boot flag that *appeared* to matter, at > least *IN MY CASE* *that day*. After a very long afternoon of not > understanding why GRUB kept reverting to its old config setup, I > accidentally discovered that changing that boot flag from one > partition to another one created instant success on the next > update-grub run I did.
You obviously misinterpreted what happened. GRUB as a whole ignores the boot flag. My guess is there was a different GRUB on each partition, and update-grub applied to the inactive one, so changing the boot flag just changed which GRUB was booted. > Many months ago there was a thread about > longevity of hard drives related to how many boots in their lifetimes. Nonsense. If the boot count mattered for hard disk longevity, there would be a SMART attribute for it. There is none.
