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The Samurai

macrumors 68020
Original poster
Dec 29, 2007
2,061
772
Glasgow
Hi Everyone

Just about to format my external harddrive as its read only at the moment (only adjustable on a Windows machine).

I've opened disk utility and chosen my external HDD from there... my question is, which format do I use? Theres about four appearing:

Mac OS Extended (case sensitive)
Mac OS Extended (case sensitive, journaledd)
Mac OS Extended
Mac OS Extended (journaled)

Which one do I choose and why? :D
 
i would also reccomend Mac OS Extended (Journaled), since its the default format OSX uses on your main drive.
 
It definitely has to be journaled, the other option (case sensitivity) is more of a personal preference. If you don't know what case sensitivity is all about, you won't need it.

Oh, since you mention windows machines in your first post - I hope you realise the filesystem you are about to use is OS X only! You will not be able to access the drive in Windows, unless you install third party software. If you need a drive that will be accessed on machines using Windows and OS X, I suggest you use FAT32 (older, but supported on both systems out of the box) or NTFS, which is pretty modern and you're probably using it on the drive now since you mentioned it is recognised as read-only. You can enable writing as well by using this.
 
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