There are three choices:.
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However, this isn't your only choice. Depending on the partition scheme, these are the file systems Mac OS I've lost a lot of data because the FAT file system on a FireWire drive got corrupt after I accidentally turned off the drive while it was in use.
After this, newer files started overwriting older ones, but I didn't find out until a month later. And don't format or partition an iPod using Disk Utility, because the iPod gets confused, even though it will function as an external drive. In addition to the file systems listed above that you can use to format your drives with, Mac OS X has various levels of support for the following file systems:.
Format a Mac's Drive With Disk Utility (OS X or Later)
And you may want to start reading up on ZFS, Sun's revolutionary new file system that is supposed to come to the Mac with Leopard. You must login or create an account to comment. Skip to main content When you put a new hard drive in your Mac—or connect an external one using FireWire or USB—you need to decide how to partition the drive and what file system to put on it.
There are three choices: Apple Partition Map: this way of organizing a disk has been used with Macs for a long time.
Pick the right file system for your Mac’s internal or external storage
If you want to boot a PowerPC Mac from the disk, you need to use this partition scheme. Mac OS Extended Case Sensitive is the same file system, but in this case, it treats file names that are the same but have different case as different. So the file text. This matches the behavior of UNIX. That's all there is to the basics of formatting a drive using Disk Utility. Remember, the process outlined here creates a single volume using all available space on the selected drive. Also be aware that the Format and Scheme types listed in the Erase option of Disk Utility will have changes as time goes on.
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Tom Nelson has written hundreds of articles, tutorials, and reviews for Other World Computing and About. He is the president of Coyote Moon, Inc.
Step 1: Disk Utility
Updated November 15, Warning The process of formatting the drive will erase all data currently stored on the device. From the left-hand pane, which contains a list of drives and volumes connected to your Mac, select the drive you wish to format. Drives are the top-level devices, with volumes appearing indented and below the drives. Drives also have a disclosure triangle next to them that can be used to reveal or hide the volume information.
A panel will drop down, warning you that erasing the selected drive will destroy all data on the drive. It will also allow you to name the new volume you're about to create. Select the format type and partition map scheme to use see below.
How to Securely Erase SSD on your Mac?
In the Erase panel, enter the new name for the volume you're about to create. Make your selection.
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In the Erase panel, after you have made all of your selections, click the Erase button.