I know the question is repeated but my question pertains to a very specific issue and is likely to be useful for future users who would install 15.04.
I read the original answer and it says there would be no problems of UEFI (Pre-installed Windows 8/8.1) while installing Ubuntu 15.04 unlike here, here and here.
From the original answer:
If however, you are using 15.04+, rejoice!, in all tests I have done with 15.04+ there was no need to do any of the steps mentioned here, so enjoy Ubuntu in all of it's booting glory!.
I wanted to ask if there are any pre-requisites while trying to install Ubuntu 15.04 (not 14.04) (with respect to UEFI, in Preinstalled Windows 8/8.1) and is it safe to assume that Ubuntu 15.04 would get installed correctly by creating the Live USB stick (as mentioned in the Ubuntu Website/guides) ?
Also, if possible please brief about the changes Ubuntu 15.04 incorporated which makes this carefree dual boot installation possible ?
Thanks a lot.