I recently found that my 500gb My Passport external could not be recognised when using the firewire 400 - 800 cable (via multiport hub or external soundcard). However it was working with firewire 800-800. I decided to install the last firmware update after a reformat to see if this fixed it but the update failed and now the drive is not recognised when I try plugging it in with any cable.
I tried reformatting in windows but windows fails to install the driver and subsequently can’t reformat.
I’m running Mac OSX 10.6.8 on a macbook pro.
Thanks, any help much appreciated