USB "Hard drive" - Stupid Question?

[Aku]

For a couple of days I've been trying to figure out why my USB connection doesn't show "Hard drive" anymore.

I upgraded to OMJ 2.2 and since then its been missing, I want to flash to a different version of OMJ, but I cant seem to figure out how to re-enable "Hard drive" I do have USB debugging enabled and I see the phone as a greyed out removable disk on my PC.

I thought that I may have to "chmod 755 /data/flash_image" from the console window, but that didn't do anything.

Any help would be appreciated....

Edit: I just noticed its not detecting my SD card, which might be the root of the problem