tl;dr (Too Long; Didn’t Read)
This post assumes that you want to back up your Mac’s hard disk, and most particularly, back up your files. As computers go, a hard disk crash and data loss is about the worst thing that can happen. There are data recovery services to get your data back, but they are expensive, and they can’t guarantee that they’ll be able to get what you want. Worse, if you have a laptop and it’s stolen or lost, you may not get anything back.
At a minimum, if you don’t feel like reading this whole thing, do the following:
Go to Western Digital or G-Technology.
If your Mac only has USB (MacBook Airs, some older white MacBooks), buy the G-DRIVE Mobile USB or My Book for Mac, depending on whether or not you want portable storage (the former) or desktop storage. If it has FireWire of any sort (FW400 or FW800), or you don’t know what your Mac has, get the ‘My Book Studio’ or the G-Drive. Get the 3 TB size if you can afford it. It’ll be bigger than whatever is in your Mac. Most Apple stores carry some of these models, and you can order them from Amazon or your electronic dealer of choice. I’ve chosen the models here because they come pre-formatted for the Mac and because the hard drives in them have a decent reliability rating. (If you’re wondering about Thunderbolt, as of this writing there are no reasonably priced Thunderbolt-interface drives for sale. This will probably change soon.)
Buy your chosen drive and follow the instructions in getting it hooked up to your Mac. If you don’t have a Time Machine volume hooked up, the system will ask you if you want to use it as a Time Machine backup. Agree with it. If it doesn’t, or you select ‘Cancel’, go into the System Preferences app, and select ‘Time Machine’. Turn the slider to ‘On’ and for ‘Select Disk’ select the disk you just hooked up. Click the ‘Show Time Machine status in menu bar’ checkbox, and you should see a new icon in the menu bar on the upper right: a clock-shaped icon with an arrow on the outer clock face. After a few minutes, the clock should start to run and the arrow should circle. If you click on it, Time Machine should show that it’s backing up or when its next backup will be.
You can go to Apple’s Time Machine Documentation for more information about how to use Time Machine, but once it’s up and running, it will automatically back up any files you’ve saved to disk. You’ll also be able to get back older versions of your files if you manage to overwrite or corrupt a current file, just so long as Time Machine has had a chance to run on that older file.
Congratulations. If something bad happens to your Mac, you should have a backup. You’re now ahead of most people. I recommend following the link and learning how to use Time Machine. It’s better to learn how to use it to do a recovery before you need to actually perform one, since you’ll be stressed enough when you do lose that file or files. Practice recovering single files, multiple files in a directory, and entire directories. I also recommend reading how to use a Time Machine backup to recover from a failed system hard disk, but as long as you have a good backup, any competent Apple Store employee or local computer store technician can help you get your computer working again if your system drive is corrupted, fails, or is lost.
( The rest is below the cutCollapse )
accomplished
annoyed
amused
intimidated
giddy
relieved
nostalgic