Format hard drive for time machine mac os x

A case-sensitive format means upper-case letters in file names are seen as different from lower-case letters. That's the default if Time Machine formats it for you, but non-case-sensitive also known as case-ignorant is the default for all other volumes.

How to Set up Time Machine on an External Hard Drive for Macbook , iMac

Do not use case-sensitive unless you're sure you need it. Click each partition in the sidebar indented under the main line of the drive , and you'll see the Format towards the lower left. Effective with Lion If ANY disk being backed-up is case-sensitive , then your backups must be case-sensitive also. So if you have, or think you might add, a case-sensitive disk, make your backup disk Mac OS Extended Case-sensitive, Journaled now.

Time Machine (macOS)

Most of the time there's no difference, but if the backups are case-sensitive, there may be problems when restoring previous versions of files via the Time Machine browser the "Star Wars" display. See Troubleshooting item E7 for a detailed explanation. Formatting a Disk for use with Time Machine:. Select the Erase tab, then confirm.

Format Your Drive With Disk Utility

This will erase the entire disk. If you want, you can select Security Options , then move the slider on that window to the first position from the left or select Zero-Out Data on Snow Leopard and earlier to physically erase the entire disk by writing over everything.

This may not work if the drive is already set up with a non-Apple Partition Map Scheme , such as is used on Windows. If that happens, just continue with item c. Select the Partition tab, then set the number of partitions from the pop-up menu below Volume Scheme use 1 partition unless you need more.

Then set the Format. To format the new hard drive using Disk Utility, follow the instructions in one of the guides below and then return to this guide:.

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Right-click the new hard drive icon on the desktop, and select Get Info from the pop-up menu. Make sure that Ignore ownership on this volume isn't checked. If you need to change it, click the padlock icon located in the bottom right corner of the Get Info window. When prompted, supply an administrator's username and password. You can now make the changes.

Select the Time Machine preference pane. Both perform the same function.

Transferring a Time Machine backup to a new drive was never easier

The interface was changed on later versions of the Time Machine preference pane. Click and drag the Backups.


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The Backups. If asked, supply an administrator name and password.

Use a Single External Hard Drive for Time Machine Backups and File Storage

The copying process starts. This can take a while, depending on the size of your current Time Machine backup. Once the copying is complete, return to the Time Machine preference pane and click Select Disk. That's all there is to it. You're ready to continue using Time Machine on your new, spacious hard drive, and you didn't lose any of the Time Machine data from the old drive.

How to back up your Mac

Share Pin Email. Tom Nelson has written hundreds of articles, tutorials, and reviews for Other World Computing and About. He is the president of Coyote Moon, Inc. Updated March 29, Start up the Mac.

Once you finish formatting the new hard drive, it mounts on your Mac's desktop. Return to the Finder and browse to the location of the current Time Machine backup. Select the new disk from the list and click Use for Backup. Continue Reading.