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#Format expansion drive for mac how to
#Format expansion drive for mac mac os x
#Format expansion drive for mac windows

See the Filesystems HOWTO for much more information on many of these. UDF: the Universal Disk Format for DVDs.ISO-9660 (with various extensions): the file system for data CDs.

#Format expansion drive for mac windows

NTFS: the Windows NT file system (read-only).

#Format expansion drive for mac mac os x

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: 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. After this, newer files started overwriting older ones, but I didn't find out until a month later. 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. Use HFS+ with journaling if possible, especially on external drives. Don't use it unless you know you need to.

UNIX File System (UFS) is exactly what the name suggests.

Note that you can't have files of 4GB or bigger on a FAT volume.

MS-DOS File System is the older FAT filesystem used with MS-DOS and Windows.

Mac OS Extended (Case Sensitive, Journaled) is HFS+ with a combination of case sensitivity and journaling.

Mac OS Extended (Journaled) is also HFS+, but it has an extra mechanism that avoids corruption of the file system when something bad happens, such as loss of power during a write operation.

So the file text.txt is different from the file Text.txt and both can exist side by side.

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.

Mac OS Extended or HFS+ is an improved version of Apple's Hierarchical File System from the mid-1980s.

Depending on the partition scheme, these are the file systems Mac OS 10.4 supports: This supports all the Mac-specific functions such as aliases and resource/data forks. In most cases, you'll want to use Mac OS Extended (Journaled) as the "volume format" (file system). You can put partitions with any of the supported file systems on a GUID disk, but only Macs running Mac OS 10.4 can access these disks.

GUID Partition Table: this is how Intel Macs organize their boot disks.

It looks like you can also use the Mac OS Extended (HFS+) file system on disks with a master boot record, but it's unlikely that older Mac OS versions support this.

Master Boot Record: this is how MSDOS and Windows organize a disk, so use this if you have an external drive that you also want to use with a Windows machine.

However, you can't put any FAT (MS-DOS/Windows-compatible) partitions on the disk.

If you want to boot a PowerPC Mac from the disk, you need to use this partition scheme. Apple Partition Map: this way of organizing a disk has been used with Macs for a long time.Whether you decide to partition the disk or not, the "options" button lets you set the type of "partition scheme" for the disk.

Keep in mind that disk access is fastest on the outside of the disk, where the first partition is located. And copying files from one partition to another is slow, even slower than copying from one disk to another. The downside is that you need to think about the size of the different partitions and keep track of which files go where. The advantage of having multiple partitions is that if one fails, the others may be unaffected. There, you can divide the disk into several partitions. If your needs are more complex, select the "partition" tab. If you want to keep things simple, just select a disk, click on the "erase" tab and you can create a volume that uses the entire disk with a few mouse clicks. After you start it, Disk Utility shows a list of all available disks along with all the volumes (partitions) present on those disks on the left side of the window. The easiest way to do that is with the Disk Utility in Applications/Utilities.

#Format expansion drive for mac how to

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.