External Drive works for windows but not Mac. Issue.

I've had a 500gig USB 2.0 External Hard drive for about 5 months now (on my macbook pro) and its holding about 400 gig of my work. Its has been working fine in all that time until this morning. I now get a window saying "Initialize", "Ignore" and "Eject"

Hiting Eject or Ignore obviously don't solve this problem and when I goto initialize none of the repair functions are available to me.

Weird thing is, when I start up my macbook pro in windows mode, the hard drive works fine and I get get to my work.

Is there an update or software that I can use to get the drive working on mac osx leopard again? Has there been a new update out that has caused this problem in the first place?

Any Help will be much appreciated.

Is it FAT32?

Run any repair programs in windows and see if that fixes it

louishen said:

Is it FAT32?

Run any repair programs in windows and see if that fixes it

Click to expand...

I have now stupidly tried to get parallels working with it, unfortunately I forgot my parallels wasn't working and have had to delete my vista partition. Now my boot camp doesn't seem to be working and I have had to use disk utility from the osx install disk. I repaired the broken files and tried boot camp again however it still comes up the same "partition failed" message.

I am now runnning disk warrior to see if this can fix the rest of my broken files.

I shall keep you updated.

Finally got boot camp back working, seemed there was lots of file errors. got vista back on the computer too so I can still access hard drive that way.

Now try to get parallels working n see if that helps any.

still not working. any ideas anyone?

Still not got any further.

Please help.

How is the external formatted?

NTFS or FAT?

Fat32 i think. It did work with both my leopard and windows for months but not it only works for windows. it just doesnt mount on the mac :