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Old Sep 4, 2011, 05:24 AM   #1
LastLine
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Reading a partitioned drive with OS X Journaled file format

Hey all,

I've got a flash drive with Lion installed on one partition set as OS X Journaled, and the second partition just as general storage (FAT) OS X reads the drive fine allowing access to both, but Windows 7 won't show either partition.

Anyone got any ideas how to solve this? Obviously it'll never read the journaled partition but I would have expected it to read the FAT partition...
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Old Sep 4, 2011, 05:52 AM   #2
AdrianK
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You may need to assign it a drive letter. Try this:
  • Right click on Computer, click manage
  • Chose the disk management snap-in
  • Find the partition in the diagram at the bottom
  • Right click, assign drive letter, click ok

It should now appear in Computer.
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Old Sep 4, 2011, 05:54 AM   #3
LastLine
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Join Date: Aug 2005
Quote:
Originally Posted by AdrianK View Post
You may need to assign it a drive letter. Try this:
  • Right click on Computer, click manage
  • Chose the disk management snap-in
  • Find the partition in the diagram at the bottom
  • Right click, assign drive letter, click ok

It should now appear in Computer.
I'll try that in a bit - but this is consistent across a number of machines - would I have to do this on each machine?
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Old Sep 4, 2011, 06:55 AM   #4
Quad5Ny
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Are you using Windows XP or earlier? If so, it's possible your flash drive is using a GUID Partition Table and if it is WinXP cannot read that.
  • What you need to do is copy everything off the drive
  • Open Disk Utility
  • Remove and re-create all your partitions with a MBR Partition Table (Partition Tab>Options>MBR)
  • Copy your data back
Also for flash drives I would used "Mac OS X Extended" instead of "Mac OS X Extended (Journaled)".

-------

If this doesn't work post back and well mess around with diskpart in Windows.
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Old Sep 4, 2011, 08:05 AM   #5
LastLine
Thread Starter
macrumors 65816
 
Join Date: Aug 2005
Quote:
Originally Posted by Quad5Ny View Post
Are you using Windows XP or earlier? If so, it's possible your flash drive is using a GUID Partition Table and if it is WinXP cannot read that.
  • What you need to do is copy everything off the drive
  • Open Disk Utility
  • Remove and re-create all your partitions with a MBR Partition Table (Partition Tab>Options>MBR)
  • Copy your data back
Also for flash drives I would used "Mac OS X Extended" instead of "Mac OS X Extended (Journaled)".

-------

If this doesn't work post back and well mess around with diskpart in Windows.
Windows 7. Can't avoid the GUID and Journaled as I want to be able to boot from it - it's only a pet project on a spare flash drive so worst case I don't boot from it...just be nice if I could
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Old Sep 4, 2011, 05:38 PM   #6
Quad5Ny
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Ah, your running Windows 7. That's very odd you can't see any of the volumes when plugging it in.

Did you try what AdrianK said, are all your partitions listed for the drive in question?
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