Don't have a WiFi card compatible with any modules for Linux or Ethernet, but I do have working OS X install with WiFi. Do have brew on OS X, and it being OSX, most Linux programs will run. How can I install Arch in this scenario?
What are my install options? I have heard If I am running a existing Linux install (not sure if BSD/Darwin counts, hoping it does) I can do a install without booting to LIVE ARCH LINUX DISK. Will I have hope? I don't need wifi, I just need it installed with packages!
You could install a virtual machine manager that can access partitions on the host system during install like VirtualBox.
Repartition your drive in OS X with Disk Utility so you have space to install Arch Linux.
Install VirtualBox for OS X. In order to have VirtualBox access a partition you will have to manually edit a vmdk file.
Install Arch Linux inside VirtualBox on a real partition of the host system. To be on the safe side, make sure you only give access to your new Arch Linux partition and not the OS X or EFI partition at this point.
Since Arch does not recommend installing GRUB2 to a partition boot sector, and most other bootloaders are not officially supported, I recommend using syslinux and GUID partition table layout (GPT) instead of MBR.
Make sure to edit syslinux.cfg so that the APPEND statement contains your disk UUID instead of the device path. See here how to find partition UUID's.
Install reFind bootloader in OS X. The next time you boot, it will scan your partitions and find your Arch install and give you the option to boot it.
In theory, you can of course mount a partition and chroot into it since OSX is UNIX-ish... But Practically, I think it would be a bad idea. You will be running a linux partition with an OSX kernel. The kernel at some point might ruin the day for you. :( The best bet is to find out about your WiFi card and look it up here:
If you find it, then it is very likely that you will be able to get it to work somehow.
