In a double boot laptop with a raid setup at install time I was presented
with a message that I needed to set up a /boot partition with the
partitioner and warning me that unless I knew what I was doing (and I did
not!), linux might not boot.
So, I created the /boot partition.
When presented with the details of the installation, the section of “Booting
from” has at least 2 options: 1) to boot from the MBR or 2) from the boot
partition (there might be another option, from “/” but I am not completely
Both MBR and /boot options were “disabled”, so I enabled the “/boot” one.
Surely enough the machine would not boot after initial install.
I then decided to reinstall all and choose “MBR”. This time everything went
So finally my question is this: is there a way to set change of boot mode,
without having to reinstall the whole system? For example using the Recovery
mode or similar?
I am not in a hurry to fix anything, but I would like to learn from the
knowledgeable people here if there is such a way. Google did not show me
anything relevant regarding this issue, but perhaps I was not searching the
Thanks in advance!