duel boot

So I duel boot because I need Ubuntu for some things and Windows for others. (I run some robot sims that don't play well with VM)

This pops up, grub vanishes, and can only boot to windows.

Good news is I have all the important stuff backed up to git.

Guess I know what I'm doing this weekend.

Should I wipe my duel boot Ubuntu/Windows and install antergos base + X + i3-wm during my final month of thesis?

Is there a really good reason to drop Ubuntu in favour of antergos base?

Are there any risk in running Duel Boot (Windows 7 & Ubuntu) at the same time? Are there good tutorial you can provide? I wanna be linux guy. Kinda confused!

Not much riskiest though,
So on my office laptop I've duel boot Fedora as primary OS and windows another.

So for some reasons I needed extra space on windows so I had to un-allocate some space from /home as it had assigned too much disk(more than 100GB I think)

So I unmounted /home moved all the /home/myuser to /opt using sudo then did sudo rm -rf to /home/myuser and un-allocated some space

after I restarted laptop I get to know that I fucked up little xD
Took me while to fix that shit, I literally created one more user and fixed it as at the time of booting it was trying to get few configs from /home/myuser and even had permission issues.