Re: Dual booting UEFI equipped notebook - Acer Aspire 5560
First, I like to thank you for this thread. I was wondering where my grub was gone to.
Second, my experience in the hope it helps others.
On an Asrock H61M-VS one does not have to remove/rename the 'efi' directory. The uefi boot menu shows two entries for my memory stick (USB and EUFI); simply selecting the correct one (USB) does the trick.
The simple solution was to force Ubuntu to install in BIOS emulation (no switches in my system setup to force it) by renaming the "efi" directory at the root of my Ubuntu LiveUSB stick. This allows you to install GRUB to the master boot record the way God intended and let it coexist with the existing MBR-partitioned Windows install, just like any regular dual-boot setup.
This did put me on the right track; I accidentally had used both during the 'try ubuntu' so I knew what you were talking about.
You'll know if the Ubuntu installer is loading in BIOS emulation if you get the normal purple screen with the accessibility and keyboard icons at the bottom. In UEFI mode, it just loads a black and white GRUB menu.
If you don't make backups of your important data, your data is obviously not important to you.