JohnWayne2010 :
I'm Trying to Dual Boot on my Asus T100 Tablet. When I turn off secure boot and select the Ubuntu drive it just flashes black and goes back to the bios screen before. There are not many settings in this Asus bios (v304) and there is no legacy mode that I know of. My Goal is to put OS X on it so I will have my own "iPad Pro" But I cant even get the machine to load Ubuntu. Please help if possible. Been trying to do this for a few months. I also tried a Dell Venue 8 Pro but the Bios had no Legacy Mode either.
Linux supports UEFI booting but there is a BIG difference between
computer UEFI and
tablet UEFI even though both are using essentially the same processors. MS got Intel to lock down tablet UEFI to by default require Secure Boot (and signed bootloaders like those in Windows 8.1), make disabling Secure Boot optional, and make Legacy BIOS Mode optional. This is because MS didn't want to lose ANY x86 market to a non-MS OS like they lost the ARM phone/tablet market to Android (Linux) and Apple's iOS (BSD UNIX.) However, computer UEFI settings are a little more liberal as computer UEFI settings are to make Secure Boot optional and mandate the ability to disable it. and most if not all have a Legacy BIOS mode. I suppose MS didn't feel threatened there or computer OEMs balked too much about not being able to sell computers to the large number of businesses that still run the non-Secure Boot/non-UEFI-compatible Windows XP.
The ASUS T100 is a Secure Boot locked-down tablet. You can get Linux to run on one but it's very hit and miss.
Here is an article describing somebody successfully getting Ubuntu to work on one of those tablets. It's certainly a non-trivial process.