Can you unmount it? You may not be able to change the boot flag while it's mounted.
If that doesn't work, you likely can't remove the boot flag while the system is booted. Try booting from installation media and changing the flag there.
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Can you unmount it? You may not be able to change the boot flag while it's mounted.
If that doesn't work, you likely can't remove the boot flag while the system is booted. Try booting from installation media and changing the flag there.
Oh yeah, didn't think about trying with a live media. Will do that
Whatever you do never flag your drives as system important (except the one with the OS), I found out the hard way when one died.
Yeah it was pretty silly, I for some reason blanked on the fact that boot is an important flag. Thankfully booting the live media worked