.... Earlier, you all suggested i start fresh with on this hard drive.I purchased an external hard drive for the backup, as was suggested. I need to back up all my email. included in my emails are photos i hope not to loose. my emails have lots of information i can not loose.then there are the data files. i saw something about a time machine but i read (above) that deltaMac suggest not backing up to the time machine , if i read his comment correct.
What do i do? please remember I AM a newbie.....please have patience...please do not use 'tech' language /words. I have NEVER done this before and I am nervous because i do not want to break this computer. How long should this take to do?
while i am waiting to hear back from you, i will attempt to figure out how to use this external hard drive....second thought ....maybe i should wait to hear back from you before i touch anything!
Ah, yes, you did not read my comments correctly. Let me say that in a different way:
If you have files (emails, your own documents, etc) that are important to you, then you should always have a backup of your files. Your external drive, and Time Machine, will make that backup easy.
Attach the external to your Mac. It will likely not be in Mac format, so open your Disk Utility, then erase the external drive, making sure it is set to be a OS X Extended format. Immediately after the erase, the drive will mount automatically, and will likely also ask you if you want to use it for a Time Machine backup. You select Yes, or Continue, or whatever will make that choice.
If you do NOT see an automatic window asking if you want to use the external for a TIme Machine backup, then open the Time Machine pref pane in your System Preferences, and click Time Machine On. It will take you through the simple steps to set up the external drive that you have connected.
Time Machine will then do that backup automatically. That initial full backup may take anywhere from maybe 30 minutes to a few hours (depending on how much data is on your internal drive) The backup will be in the background, so you don't have to wait for it to complete - you can do other things on your computer while the backup is completing.