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Its important to ensure that you have enough space to determine the right device to put your files on. To do so, you must know how much information is to be saved. Example.
Windows 7/Vista: Right on the desired file or folder and select "Properties". The amount of information will be displayed under "Size".
Mac OS X: Hold "control" and click on the desired folder or file location. Select "Get Info". The amount of information will be displayed under "Size".
General User Data/ Personal Data
General user data is anything that you have put on the computer. Desktop icons, pictures, downloads, documents, music, movies, etc. This is commonly referred to as personal data.
Windows 7/Vista: Right click on the User folder in the location below. Select Properties and it will then populate to tell you the file size:
Mac OS X: Click on your desktop in open space to ensure that you have "Finder" to the right of your top left Apple symbol. You then click on the "Go" drop down and select "Computer"
Office Documents
Windows 7/Vista: Files such as
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