8445 Views 4 Replies Latest reply: May 8, 2007 7:24 AM by eww
Since I have never had a disk that was formatted NTFS, I am not absolutely sure exactly how you can discover how it is formatted. I think if you look at the disk with Disk Utility that should tell you.
Yes. If you reformat you will lose everything that is currently on that disk.
To reformat open Disk Utility and then select the disk. You then click the partition tab. This will allow you to select what format you wish to use. I would suggest Mac OS Extended +
NTFS is a hard drive format commonly used with and by recent versions of MS Windows. Your drive may have come pre-formatted as NTFS.
Click once on the external drive's icon and choose "Get Info" from the File menu. In the Get Info window, what is shown in the "Format:" line?
Reformatting the drive as "Mac OS Extended" will make it useful with your Mac at the expense of usefulness with Windows PCs, which can't read that disk format at all without third-party add-on software. For best cross-platform compatibility, if you need that, use the MS-DOS (FAT32) format instead. If the drive will now be used only with your Mac, definitely use Mac OS Extended.