![]() ![]() It’s probably updated when some background process crawls your hard disk, categorizing the files and adding up their sizes. It seems that the graphical display of different types of files (audio, movies, photos, apps, backups, other) is not updated in real-time. Why does About This Mac show I’ve got a Big Backup Area, when this space is free / available using Get Info on my Macintosh HD? on a TimeCapsule), the backups kept on your local flash storage / SSD / hard disk will get transferred to the Time Machine backup volume, and the space will be reclaimed. Once you connect your Time Capsule backup disk or volume on the network (e.g. Also if you just have 80GB of files added or deleted from your Mac – they’ll all sit in the backup area until you connect your TimeMachine backup disk or Time Capsule. If you’re doing media production and editing (image, sound or video work), these big files can change, and that can result in a really big backup area showing. iTunes movie or TV show rentals), TimeMachine might be keep copies of them. If you’re moving big files on and off your Mac (e.g. Time Machine runs every hour, so it would take a copy of every file that’s changed in that hour. external USB hard drive), it takes backups of changed files locally. What is the Backup Area in the Storage Tab of About This Mac?Īpple introduced an enhancement in Mac OS X Lion that if Time Machine can’t access your backup disk (e.g. I might move this into the main article later. I’d use the Storage tab in System Information for working out what you need to delete to make free space. I’d use Macintosh HD way for most up-to-date free space measurement. What’s taking up all the space on my hard disk. The About This Mac is useful as a diagnostic display: “I need some free space. you just deleted some files and it hadn’t caught up. Perhaps this information got a little out of date on your Mac, e.g. To display the pretty disk usage display in About This Mac, a lot of information needs to be condensed, such as the size and type of every file on the disk. I check if perhaps one way counts files in the Trash and the other doesn’t, but this isn’t the case. So they’re quite close, not different by 10 GB like yours. The “Get Info” on “Macintosh HD” way 45.61 GB free. The “About This Mac” way of shows 45.14 GB free disk space. If you found this article useful, please link to it from your website or blog, click the Like or +1 button to help others find this page. If you have a question or comment about check disk size and free space on Mac, please use the comment form at the bottom of the page. Look at the “ Capacity” field for the disk’s size, and the “ Available” field for how much free space the disk has. A window will appear with information about the disk.Click the File menu at the top left of the screen.Click the disk once whose size or free space you want to find out.A list of disks connected to your computer will appear in a window, with some other items like “ Network“.Click Go at the top of the screen to open the Go menu. Click the menu item “ Computer“.The dock is the bar of icons, usually at the bottom of the screen, used to start programs. Go to Finder: Click the smiley blue Mac face at the left end of the Dock.Here’s an alternative method to find a disk’s size and free space on Lion that that works for removable disks and network drives: ![]() Get a disk's size and free space using "Get Info" on Mac OS X Lion The Snow Leopard method I use doesn’t work either – in Lion, disks aren’t listed on the side of a Finder window as they are in Snow Leopard. The method above doesn’t work for removable hard drives on Lion. Get the Size of a Removable Hard Disk with Mac OS X Lion It might work with other permanently connected hard disks installed in your Mac – I haven’t tested this yet. It does not work with removable hard drives. This feature works with your main Mac hard disc, usually called “ Macintosh HD“. The display includes how much disk space is used for each of your music, movies, photos, apps, and backup files. An attractive window showing your free disk space will appear.Click the word Storage towards the top left of the window.Click About This Mac at the top of the menu.Ī new About This Mac window will appear with a picture of your Mac.Click the Apple icon at the top-left of the screen. Here’s how you show your disk’s free space on OSX 10.7, step-by-step: The new way to check free disk space on OS X Lion Get the Size and Free Space of the Mac’s Hard Disk on Lion Besides showing the size of the disk and how much free space it has, this method shows graphically how much space is being used for different types of files. I stumbled across this feature by accident. Mac OS X Lion includes a awesome new way to check the free space on a disc. ![]()
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