I think your problem is nothing to do with this BIOS bug.
Youn are giving a boot priority to the internal drive before the optic drive.
You should override the boot order by pressing a certain key such as F2, F8 and F9 just after the booting.
Refer the manual of your machine to find out this boot order override key.
My point was that I have difficulty in changing the order, changes are not permanent, and if it does boot from the CD it does not work in UEFI mode, and so I cannot use e.g. Boot Repair.
Would it be harmful to use fix referred to above, or is that specific to Lenovo?
I think your problem is nothing to do with this BIOS bug.
Youn are giving a boot priority to the internal drive before the optic drive.
You should override the boot order by pressing a certain key such as F2, F8 and F9 just after the booting.
Refer the manual of your machine to find out this boot order override key.
My point was that I have difficulty in changing the order, changes are not permanent, and if it does boot from the CD it does not work in UEFI mode, and so I cannot use e.g. Boot Repair.
Would it be harmful to use fix referred to above, or is that specific to Lenovo?