OpenBSD -current works pretty well on my Mid-2011 Macbook Air (A1370, SandyBridge). The new KMS code brings up the MBA's eDP display in 1366x768 with backlight control. ACPI works as expected for battery/AC status, CPU throttling, and full suspend/resume support. The Broadcom wireless card does not work, so for now I am using this tiny USB adapter (urtwn
) which is rather unobtrusive when plugged in.
Dual-booting with Mac OS X is fairly easy, but once FileVault is enabled for full-disk encryption of Mac OS, it clobbers the path to boot back into OpenBSD. Here's how to get both OSes working, each with its own disk encryption, without having to use rEFIt or anything else.
###Mac OS X Configuration
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If FileVault is already enabled, turn it off and decrypt the SSD.
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Use Boot Camp Assistant to partition the hard drive, slicing off a portion of the end of the drive for OpenBSD (I used 30Gb on a 256Gb SSD). If BCA jus