I had been looking for a way to enable pressure sensitivity on mac for a longgggggggggg time, for like 5 or 6 months. I had to have tried at least 10 different methods that never worked. I was just about to die trying, but then, on one magical day, I finally managed to get it. It might have not been the absolutely safest risk-free way, but nevertheless it's worth sharing, i hope.
Yes, this is the Parallels method. Just a warning: This includes downloading torrent files.
1. Since we will be downloading torrent files from piratebay, we need a software to open these files if you don't already have one. An software that is like this is Transmission ----> [link]
Use the usual Install software steps, and go ahead and open it.
2. Install Parallels. I used Parallels 7. Go to piratebay.org and type in Parallels Desktop 7 (Mountain Lion Compatible). There should be only one link, click on it and click on Get this Torrent. Make sure transmission is running. Install it, you might need to enter the serial number although I didn't need to enter it. It's included. (It works with Mountain Lion X3)
3. Install Windows 7 as a virtual machine. I made the mistake of installing Windows 8 at first because I didn't know it doesn't work on Windows 8. Get Windows 7 here-search up Windows 7 Ultimate Fully Activated Genuine on piratebay and click on the one that says Team MJ. Again make sure Transmission is up.
4. The downloads will take awhile, so try to distract yourself with other activities to keep yourself busy. You could even pause your download and resume it whenever you want.
5. After they're done downloading, open Parallels and do the usual installation. (Choose "like a PC") If it prompts you for a serial, the serial should be in the TXT file included in the download. Try to find the folder in the Finder and get it from there. If it asks you to login, just close the window.
6. It should prompt you to install a virtual machine. Use the dropdown menu and if you don't see Windows 7 iso or something like that, choose "Choose an image file…" And find the Windows 7 file you downloaded. Click on it and click Continue, and the virtual machine should start downloading. If you are prompted for a product key number, just uncheck the box that says "This version requires a product key" and continue.
7. After that, the windows desktop should appear on your window, and the basic stuff after that is up to you. But for tablet pressure to work, first you have in install your software in which you use your tablet for. This tutorial is mainly for Paint Tool Sai, but it might work with other graphics softwares too. To install Paint Tool Sai, make sure you're still in your windows window, and use this link -------> www.4shared.com/zip/pP9oWXpg/Paint_Tool_SAI_Full_Version.html This was the only link I could find that was not a trial version so far, and you need to sign up for 4shared to get the file but I guarantee you it's worth it. 4shared is also a great website for any kind of free music downloads and other such. It's risk-free and takes like 2 seconds xD
8. Extract Paint Tool Sai and open it. You can now use Paint Tool Sai! I realized the reason I wasn't getting pen pressure at first was because I never installed my tablet software onto the windows virtual machine. That's the only way the program can work. So I inserted the installation disc while I was on Windows and installed it.
9. After that, find the "Devices" tab on the top and find your tablet name in the dropdown menu. It's usually a weird combination of letters and numbers. Click on it, and there will be a glitch on your mouse; it won't move with your tablet pen. To fix this mouse glitch, go to the control panel and find your mouse settings. (I just searched it in the search bar) and on the tab "Pointer Options", check the box "Display pointer trails" and you can slide the bar to short to make it less noticeable. That should fix the glitch.
10. And there you have it, open up Paint Tool Sai or whatever program you use and start drawing! Sometimes when you connect your tablet while you have the program on, it won't work, but just close and open the program again and the pen pressure will be fine. Make sure you see your Dock, or whatever your tablet's opening thing is when it's connected, on your Windows window, so you can be sure that the tablet is connected to it.
I use this Windows for drawing purposes only, so I'm not very sure what to do for other programs or how to install them. Remember, this Windows is a virtual machine, so it may not have all the functions of the actual Windows 7, but you can run most Windows programs on it, I can assume >.<
How to fix the "Not genuine" nags that show up after a week
I got annoyed at the nags that always popped up whenever I opened Windows talking about some damn "Windows is not genuine" So I tried a way to stop all that.
1. Go to control panel. Search Windows Update and click on it. Click on "View update history" and uninstall update KB971033 if you have it. I didn't, but some people have to uninstall it in order for this to work.
2. Open an elevated command prompt. (Start, type Cmd in search box and click it. A black window with white words should pop up) Type in this command: slmgr -rearm (Space after after slmgr and - but not between the - and rearm)
3. Exit command prompt. Restart TWICE. YES, I SAID TWICE.
4. Now, the virtual machine should be genuine. You can now set desktop backgrounds as normal and the not genuine notices should leave you alone now. Enjoy (:
So now pen pressure should work on your mac, the only hassle is that you have to open up parallels every time you want to draw, but hey, the pen pressure is worth it. Also, you have to reconnect your tablet every time you want to draw (The "Devices"--> Your tablet name thing) and then your pressure sensitivity works.
Again, if something does not work or the link gets removed/outdated/whatever, leave a comment below or you could even send me a note and I will try to help you as soon as possible.
Happy Drawing :]