I'm trying to install Windows 10 alongside Ubuntu 18.04 because I want to try some games on my laptop, and then go back to Ubuntu.
I have two USB Flash Drives, one with Windows 10 and the other with Ubuntu 18.04.
These are the steps I've done after following some answers here on Ask Ubuntu:
Booted on Live Ubuntu, and shrank my 1TB HDD into a 500 GB NTFS partition with GParted;
Booted on my Windows 10 USB Flash (on UEFI) and installing Windows without deleting the partition or formatting it, just by pressing next ( I also tried deleting it and make a new one with Windows, but I encounter the same issue);
After install, it was directly booting into windows, probably installing other stuff, and this is the annoying part, Windows froze at
Getting devices ready
or something like this. I forced it to shut down and then .. continuing to step 4;
I booted again on my Live Ubuntu USB, and I have installed boot-repair, doing the recommended installation.
After installing boot-repair, I restarted my laptop, booted on Ubuntu OS redirecting me to GRUB Boot Loader, I selected Windows everything loaded then I got this error that Windows isn't installed properly and I have to restart and reinstall it.
I really don't know what to do any more, I deleted the NTFS partition and extended my ext4 partition, everything is normal now, but I really need Windows 10, I also need an answer on how to uninstall it and go back to normal.
This is one of the questions I was following, but it doesn't work for me: Install Windows 10 alongside Ubuntu 14.04
And this is the second question, and I was following the first and the second answer, except doing the mount /boot thing because I didn't know what to do exactly: How can I install Windows after I've installed Ubuntu?