I am going to just say what I mean by that in the following manner.
- I boot up my laptop and it just boots into Windows 10.
- I boot up my laptop, press enter right when it boots (it's a Lenovo Thinkpad) I pick select boot partition and I can pick Ubuntu or Windows 10
I was able, I don't have no idea how, to do that very same thing in a Lenovo Thinkpad X250, I was having issues with Ubuntu installer picking my Windows 10 installation, it eventually detected a Windows Manager, and then it just went on a boot loop, I tried fixing the boot-file, used Ubuntu boot fixer, nothing seemed to work, changed some settings on the laptop BIOS and Lo and Behold! it booted into Windows 10, even faster than before... I went "I do wonder...." pressed F12 to pick the loading media and There it was, the option Windows Manager and Ubuntu alongside USB, HDD, LAN, etc...
Has anyone got an idea how to do that on purpose?
I know it's way too much work for just that, but the idea of that fast boot into Windows 10 and only using Ubuntu when I want it (and "turning off GRUB" because he is no longer needed) is something that I wondered if could be done for a long time, it seems to be related with UEFI and how it's capable of picking up the OS that belongs to a partition a treat is as it's own media.
Thanks for any help of the matter.
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