[majidbhurgri]

Kimmy, I have a quick question, may be you can help.

Is it possible to add Ubuntu in the 3rd partition created likewise? What steps, if any, would be needed to do what was done after Windows 7 install to make OSX partition active partition?

[Kimmy2000]

Originally Posted by majidbhurgri

Kimmy, I have a quick question, may be you can help.

Is it possible to add Ubuntu in the 3rd partition created likewise? What steps, if any, would be needed to do what was done after Windows 7 install to make OSX partition active partition?

Hmm, I have not actually tried adding Ubuntu as a 3rd partition yet, but this is what I am looking at trying to do in the next few days. I will post some steps up if I am successful.

Kimmy

[majidbhurgri]

After couple of attempts, I managed to have all three OS and have a fully functional triple boot machine. Basically, I followed the guides, created 3 partitions in the beginning, installed OSX, then Windows7 and finally Ubuntu as per triple booting guides available on this forum. It was pretty straightforward up to this point but then it gets messy as installation of Ubuntu messes Windows booting process and the partitions are out of sync.

The only method which worked for me was use gptsync in Ubuntu to resync the partitions. Here are the specific steps for this:

1.The gptsync version available for Ubuntu too does not work, you need to download a different version of it from here and install it
Debian -- Package Download Selection -- gptsync_0.14-2_i386.deb

2. After installation, you go into terminal and execute following command
sudo gptsync /dev/sda

3. This syncs the partitions and fixes the problem. Now when you reboot, it boots Windows directly, but to boot into other OS you still need OSX install USB.

4. Boot using Windows install USB, bring up terminal (shift+F10) and run diskpart. Make Windows partition active. Shut down and reboot so that activation takes effect.

5. Boot one more time with Windows install USB, and this time you will see Windows OS listed and and option to repair it. Repair it, and then make OSX partition active so that Chameleon bootloader can take over.

That is it. Now when you boot, it boots by default into OSX, but if you hit any key while timer bar is waning, you get the option to boot into any of the three OSs.