Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

So I have an internal 500GB Western Digital HDD, and it's formatted at NTFS, but it won't mount in OS X. Both Windows and Ubuntu Linux can read and write to it perfectly fine, but OS X says the file system is unreadable. I have used this hard drive before with OS X and it worked flawlessly, but now when I boot I get a "OS X cannot read this filesystem" error.

share|improve this question

4 Answers 4

Safely Eject the drive the last time you used it? I know that you've got to force a mount in linux if an NTFS drive wasn't safely dismounted in windows...

share|improve this answer

Mac OSX I'm pretty sure can only read NTFS and not write. So, give this a try. It is a preference pane built by Paragon and it allows you to mount the NTFS partitions needed.

share|improve this answer
1  
Link only answers are discouraged here - please expand your answer, @roher4. –  studiohack May 9 '11 at 21:41
    
Ok, I'll edit the comment now. –  roher4 May 11 '11 at 20:31

Try repairing the partition in Linux or Windows and then attempting to mount on the Mac. It's very likely that the Mac will refuse to mount a dirty partition, not knowing how to fix it.

share|improve this answer

Maybe there's a problem with the driver. Try using ntfs-3g for OS X.

example:

mount -t ntfs-3g /dev/disk1s1 /Windows
share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.