Will upgrading from MAC 10.6.8 to Mountain Lion, 10.8, cause any conflicts or problems?

Question

I have MAC OS 10.6.8 and would like to use some applications that require me to upgrad to 10.8.--.  Should I expect to experience any problems?

Answer 1

Check that your computer is compatible with Mountain Lion.
To check the model number hold down the option/alt key, go to the Apple menu and select System Information.
iMac (Mid 2007 or newer) model number 7,1 or higher
MacBook (Late 2008 Aluminum, or Early 2009 or newer) model number 5,1 or higher
MacBook Pro (Mid/Late 2007 or newer) model number 3,1 or higher
MacBook Air (Late 2008 or newer) model number 2,1 or higher
Mac mini (Early 2009 or newer) model number 3,1 or higher
Mac Pro (Early 2008 or newer) model number 3,1 or higher
Xserve (Early 2009) model number 3,1 or higher
Your Mac needs:
OS X v10.6.8 or OS X Lion already installed
2 GB or more of memory (More is better - 4 GB minimum seems to be the consensus)
8 GB or more of available space
Model Numbers                  Computer Compatibility - Apple 
If your computer isn't compatible, you might be able to upgrade to Lion.        Computer Compatibility - Lion
Check to make sure your applications are compatible. PowerPC applications are no longer supported.        Application Compatibility
You can also check which applications are PowerPC by going to the  menu, select About this Mac, click on More info…, then click System Report and select Software/Applications.
If you have applications that you want to use that aren’t compatible, you can retain Snow Leopard and create a new partition to install Mountain Lion on or you can run Snow Leopard  server in a virtual mode.
Do a backup before installing.
Boot using the disks that came with your computer, the Snow Leopard DVD (if installed) or the Recovery volume (command -R) if upgrading from Lion. Use Disk Utility to Verify/Repair  the disk and run Repair Permissions. Restart normally.
If you can/do upgrade, I recommend you make a copy of the installer and move it out of your Applications folder. The installer self-destructs. The copy will keep you from having to download the installer again.  You can make a bootable DVD/USB stick to install using this free program.
Bootable Drive DVD or USB Flash Drive – Lion Diskmaker
If you need/want more RAM, the 2 places I’ve seen recommended most to buy reliable RAM are below. I have purchased RAM serveral times from Other World Computing and have always been very satisfied with the product and service.
Crucial
Other World Computing
From Kappy
Install Mountain Lion Successfully from 10.6.8
From a brody
Mountain Lion 10.8 Updating requirements