What programs need re-installing after upgrade to Mavericks?

Question

Hi.
I'm new to Mac, currently running OSX 10.7.5 Lion with Parallels 9  - intending to upgrade to Maverick.
I'm aware that files should be backed up onto ext. source before backup but ..
Will the upgrade take out Parallels and associated Windows files/programs.
Will it take out files such as Office for Mac 2011 or am I being a little overcatious?

Answer 1

Parallels or Boot Camp does not matter. The same answer holds. If you want the best chance of success, I would encourage the following:
Follow proper upgrade practices;
Remove all third-party peripherals.
Repair your hard drive and permissions using Disk Utility.
Backup your computer to an external drive.
Be sure you have at least 20 GBs of free space on your hard drive.
Download the Mavericks installer application.
Upon completion do not run the installer, but quit the installer.
Make a copy of the installer in your Downloads folder before you proceed with installing.
Make a bootable flash drive installer.
Install Mavericks on your computer.
Make Your Own Mavericks, Mountain/Lion Installer
1. After downloading the installer you must first save the Install Mac OS X application. After the installer downloads DO NOT click on the Install button. Go to your Applications folder and make a copy of the installer. Move the copy into your Downloads folder. Now you can click on the Install button. You must do this because the installer deletes itself automatically when it finishes installing.
2. Get a USB flash drive that is at least 8 GBs. Prep this flash drive as follows:
Open Disk Utility in your Utilities folder.
After DU loads select your flash drive (this is the entry with the mfgr.'s ID and size) from the leftside list. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
Select the volume you just created (this is the sub-entry under the drive entry) from the left side list.
Click on the Erase tab in the DU main window.
Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
Click on the Erase button. The format process can take up to an hour depending upon the flash drive size.
3. Use DiskMaker X to put your installer clone onto the USB flash drive.
Make your own Mavericks flash drive installer using the Mavericks tool:
You can also create a Mavericks flash drive installer via the Terminal. Mavericks has its own built-in installer maker you use via the Terminal:
You will need a freshly partitioned and formatted USB flash drive with at least 8GBs. Leave the name of the flash drive at the system default, "Untitled." Do not change this name. Open the Terminal in the Utilities folder. Copy this command line after the prompt in the Terminal's window:
sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ OS\ X\ Mavericks.app --nointeraction
Press RETURN. Enter your admin password when prompted. It will not be echoed to the screen so be careful to enter it correctly. Press RETURN, again.
Wait for the process to complete which will take quite some time.
My personal recommendation is that you backup your computer after making the flash drive installer, then boot from the flash drive installer, erase your hard drive, and install Mavericks. Test the system out thoroughly until you are satisfied it's working properly for you. Then restore your data from the backup you made.