Ok, long story short... I have an iMac that I do not have the passwords to use properly... so the easiest thing to do it seems to me is to backup the data so I don't lose any important files and then erase and re-install the operating system. I have not done this in a LONG time with a Mac OS... so I'm wondering about any gotchas so I don't go from a partially usable computer to a complete unusable one! Basically... any easy (doesn't have to be fast) and legally free way to copy/backup the content to an external drive... then suggestions on how to proceed with an erase/reinstall. When I purchased Mavericks OSX I burned the contend to a DVD... but reading online it almost sounds like that doesn't matter as I can connect to the internet and download/reinstall. Is it really that easy? I'm reading what sounds like: 1. Restart the computer. 2. Hold Command+R keys at the right time. 3. Erase/format the drive. 4. Choose Wifi connection (or connect via ethernet) 5. Reinstall OS. Will I get to choose the OS in this scenario? OR is that when I would use my DVD that I hopefully burned correctly last year? I presume it would ask for my Apple ID at some point so I can configure for my account and not the one the computer is currently attached to. IF that's the case... then maybe all I really need help with is making a copy of all the content. I have a 1TB drive in the computer, but only about 350GB is used... and I have a 2TB external drive with plenty of free space. The plan is to dump the content to the external drive so I can look at leisurely to make sure I haven't lost any important files... but in the meantime I'm running into roadblocks doing things on the computer that prompt me for passwords that I don't know, hence the reason I need to ultimately wipe and start over. Thanks in advance for any thoughts or help!