Therefore, Apple uses an ugly and dangerous GPT disks on BIOS-based computers (which it thinks a Mac is thanks toĪpple's BIOS emulation). Table (GPT) rather than the more common Master Boot Use of a hybrid MBR-Intel-based Macs use the GUID Partition.My own Mac isn't one of theĪffected models, so I can't comment further on this issue. Multiple graphics chipsets, you can't select which chipset to use inīIOS mode, but you can in EFI mode. Reduced graphics card flexibility-On some models with.I've not tested this effect myself, so I'm Longer boot times-BIOS emulation is widely regarded as.

BIOSĮmulation is expedient, and it's the only way that most versions of WindowsĬan boot directly on a Mac, but it's got several drawbacks: System (BIOS) layer that the OS can use, rather than rely on the Extensibleįirmware Interface (EFI) that OS X uses to run on the computer. In this mode, the Mac sets up a Basic Input Output Using its Compatibility Support Module (CSM), which provides BIOSĮmulation on the Mac. These guides typically end up creating a configuration that boots Linux Macintosh that are intended to enable it to boot Windows. Most of these guides, however, rely on features of the When installing Ubuntu Linux on an Intel-based Macintosh, most peopleįollow any of several guides available on the Internet, such as this Thus, you may need to deviate from these instructions on modern computers. I've tried to point these out, but I haven't fully researched better replacements, and I lack the modern hardware on which to test some of the better methods on more recent 64-bit Macs. Developments in the last year have rendered certain of the procedures on this page sub-optimal. Note: This page is written using a rather elderly 32-bit Mac Mini as a reference, and using Ubuntu 12.04 as a reference. Small donation to help keep this site up and running. If you find this Web page useful, please consider making a Outside ads however, I did take time to prepare it, and Web hosting doesĬost money. This Web page is provided free of charge and with no annoying I'm a technical writer and consultant specializing in Linux EFI-Booting Ubuntu on a Mac EFI-Booting Ubuntu on a Mac by Rod Smith, written: 1/2011 Last Web page update: (last major update: )

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