[SOLVED] OS X showing HFS, Ubuntu showing HFS+?

[nkri]

Hey, everyone, I'm really confused:(. I bought an external hard drive and formatted to HFS+ because I use it for all my photo stuff in OS X, but when I found out that you can't write to HFS+ in Ubuntu, I simply turned off journaling with the Apple terminal:
diskutil disableJournal /dev/disk2s3

This seemed fine, but when I looked at it in Ubuntu, it showed HFS+ even though I disabled journaling. What the heck is going on????

This is really annoying since I've been trying to use PartImage to backup my internal HDD onto the external, but it won't let me (saying that it is an incompatible format and try again, even though HFS is supported). What should I do??

Thanks!
-nkri

[DGortze380]

I believe disabling journaling is temporary and only works while mounted in os x. try mounting the external, disable journaling, unmount, remount, check format in disk utility. I bet it comes up hfs+ (journaled).

I think you'll need to reformat the external as HFS not journaled.

[nkri]

Yeah, that's what I feared, but thanks for clearing it up for me!
-nkri

[flaggh]

I believe disabling journaling is temporary and only works while mounted in os x. try mounting the external, disable journaling, unmount, remount, check format in disk utility. I bet it comes up hfs+ (journaled).

I think you'll need to reformat the external as HFS not journaled.

I don't believe this is accurate. HFS+ non-journaled is not the same thing as HFS. When you disable journaling, it will still be an HFS+ formatted drive. HFS is a different filesystem.

[nkri]

Yep, I discovered that right after my second post. HFS+ is Mac OS Extended (available in OS X), while HFS is Mac OS Standard (used in OS 9 but not available in OS X). Journaling has nothing to do with it, so I'm assuming I would have to re-format with GParted, right? Disk utility doesn't do HFS:mad:.

Thanks!
-nkri

[DonnieP]

I don't believe this is accurate. HFS+ non-journaled is not the same thing as HFS. When you disable journaling, it will still be an HFS+ formatted drive. HFS is a different filesystem.
I have been needing to write to my OSX partition from my Ubuntu partition (on the same drive), so I tried disabling journaling on this internal drive. This worked - it wasn't just temporary - which I confirmed by rebooting into OSX. And it's still HFS+. However, when I tried to disable journaling on my HFS+ external drive (used for Time Machine), disk utility squawked and refused to go there.

[nkri]

I have been needing to write to my OSX partition from my Ubuntu partition (on the same drive), so I tried disabling journaling on this internal drive. This worked - it wasn't just temporary - which I confirmed by rebooting into OSX. And it's still HFS+. However, when I tried to disable journaling on my HFS+ external drive (used for Time Machine), disk utility squawked and refused to go there.

By "squawked and refused to go there," do you mean that you couldn't disable journaling using the button in disk utility? If so, all you have to do is press Option+File. "Disable Journaling" will show up in the menu. Or, if you want to use the terminal:
diskutil list
to find out the name of the disk, and
diskutil disableJournal /dev/Volumename
to disable journaling on the disk.

Good luck!
-nkri

[DonnieP]

By "squawked and refused to go there," do you mean that you couldn't disable journaling using the button in disk utility? If so, all you have to do is press Option+File. "Disable Journaling" will show up in the menu.
I did Option+File (which is what I did successfully to disable journaling on the internal hard disk). On the external drive, after selecting Disable Journaling from the menu, it gave me some error message to the effect that it couldn't disable journaling on this drive. Same message repeated after reboot on another try.

[nkri]

Oh, that probably has something to do with Time Machine (I'm not sure, as I still use Tiger and don't have this feature:().

[amarkitanis]

sorry to bring up this thread again,

if you have an HFS+ journaled external hard disk and you read/write files in Ubuntu, does that hard disk become corrupted under mac os x?

I've been using my external hard disk (HFS+ journaled) both on linux, and windows (using MacDrive) both reading and writing.

I haven't had used the extenal disk with mac for a while.

Doing this today, the hard disk does not mount, and under disk utility it says that the file system is fat 32 and it cannot be mounted nor repaired.
Linux and Windows Vista can read files and write to the hard disk perfectly fine.

Gparted recognises the disk and says that its filesystem is unknown.

Any suggestions anyone?

Thanks

[cyberdork33]

*oops

[cyberdork33]

Please do not double post:
http://ubuntuforums.org/showthread.php?t=869655