can i load ubuntu on a mac os x without installing refind

When I installed Ubuntu to the microSD (/dev/sdc), I also installed the grub bootloader to the sdc volume which I was installing Ubuntu on, so that the bootloader did not damage my Mac OS or Windows boot processes. Basically the same problem you run into after installing Linux to an external drive when Bootcamp is already using that EFI folder. The only way I've found to fix this is to replace boot圆4.efi with the Windows version. When removing the microSD and booting to that volume, Windows boots to the Grub bash screen. With the microSD inserted, the boot menu still only displayed MacBook and Windows, and when selecting Windows, I got the MokManager error, but it still booted into Ubuntu anyway after leaving it for about 30 seconds. boot/boot圆4.efi, but the results were goofy. I did try taking their advice of copying the. This mentions something similar: Linux on Macbook, dual-boot, without rEFind, but it's for Dual boot. So far, I've only gotten a Chrome OS on a microSD workable from the Mac's boot menu, but I'm failing to get Ubuntu. My Mac drive is only 128GB, and I've cut into that with Bootcamp, so I'm looking to boot Linux distros via microSD. Most of the questions here similar to my question regard triple booting and using rEFInd, which I'm not trying to do.

Can i load ubuntu on a mac os x without installing refind