EFI Update Enables Some DOS Tools

The latest Apple EFI update adds additional support for bootable DOS mode utilities! Some disk utilities which work on other BIOS based Intel PCs now work, A20 mode still not supported. Unsure whether A20 is required for this, but memtest86 is still broken. Some might ask why use that instead of the Mac memtest application? Well, memtest86 doesn’t require booting a full OS X kernel, and so more of the machine’s memory can be checked.

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