Hello, I'm kinda at the same step, but in a macbookpro12,1
I resize my OSX partition, burn a install58.fs on a usb stick, boot holding ALT, install OpenBSD on the part of resize partition, and then follow jcs@ tutorial: https://gist.github.com/jcs/5573685 Now, "El Capitan" have like a 'Secure Level' thing that you can do the step Mac OS X Encryption -> 3-6. So, you need to boot on Rescue Mode and disable this new protection from the console on rescue mode: # csrutil disable Then reboot, and try the "Mac OS X Encryption" step. Install refind and cross your fingers :) On 16/11, Marcel Timm wrote: ; Hi there, ; ; one thing I would like to try is to boot from created OpenBSD EFI USB stick ; with ; ; boot -a ; ; and enter the OpenBSD's root partition on the HD. ; ; Unfortunately neither the MacBook Pro 8,2 's integrated ; nor an external USB keyboard work at the prompt where to enter the ; root device's location. :( ; ; Is there another way of telling the kernel which root device to use ; (maybe at boot's prompt - although I haven't found anything in man page..)? ; ; If this seems to be a XY question to you, I am happy about other proposals. ; ; Greetings ; Marcel ; ; On 11.11.2015 16:01, Marcel Timm wrote: ; >Hello! ; > ; >My computer is a MacBook Pro 8,2. ; > ; >There is a GPT on the HD (big surprise!) with four partitions, ; >the last one being of type OpenBSD. ; > ; >I managed to put a recent OpenBSD 5.8 snapshot there ; >by booting and installing from an USB stick via EFI created like that (in ; >OSX): ; > ; >dd if=~/install58.fs of=/dev/rdisk2 bs=1m ; > ; >After installing rEFInd 0.9.2 and putting OpenBSD 5.8 snapshot's ; >BOOTX64.EFI file ; >to the MacBook's EFI partition the rEFInd boot manager shows the OpenBSD ; >EFI option. ; > ; >Selecting that OpenBSD entry starts the boot programm showing hd0 hd1 hd2 ; >and hd3. ; > ; >Is it possible to boot my "EFI OpenBSD installation" from here? ; >If so, how to proceed? ; > ; >I already played with ; > ; >set device hd0d ; > ; >etc. - but it did not work. ; > ; >I will gladly share more details, if of any help. ; > ; >Thanks in advance! ; > ; >Marcel ; -- Sending from my toaster.

