If you used the Raspple II installation method, you’ve already installed the A2CLOUD software, and can skip the rest of this post.
If you don’t have A2CLOUD installed yet — because, for example, you installed vanilla NOOBS or Raspbian, rather than Raspple II — log in to your Pi, and at the Linux prompt type:
wget ivanx.com/a2cloud/setup; source setup
A2CLOUD is confirmed to work on Debian 7 (“Wheezy”), all releases of Raspbian, and possibly earlier versions of both. It is believed to work on other Debian derivatives, such as Ubuntu 14.04 LTS. (A2CLOUD does not yet fully work on Debian 8 or Ubuntu 15.04, or other distributions that use systemd.)
Follow the prompts; I suggest you answer “yes” to all of them, and everything on these pages will assume that you have. When you are asked to specify the size of your virtual disk (in KB), keep in mind that the larger it is, the slower it will be; hopefully this will change in the future.
When it’s done, the A2CLOUD installer will ask you to reboot your Pi. Do so, and wait about two minutes for it to complete. (If you’ve got a screen attached, wait until it shows you the login prompt; you don’t actually need to log in.)
You’ve now got your Raspberry Pi providing virtual drives and internet access for your Apple II!