Legacy Drive

I want to recover data backed up on a WD5000E032 drive. The G4 mac that the data was generated on won’t boot up. I currently have a Windows 7 laptop and can borrow a MacBook Air. Pluggin the USB connection into either laptop has no effect (no drive icon appears). The drive appears to be working becuase it hums and has a blue light in front. I tried downloading firmware to the MacBook, but got an error message about not supporting power PC software.


Check the link below for some basic troubleshooting:

WD external hard drive is not powering on or is not recognized on a Mac system 

I tried those things already without success, and  Windows Data Lifeguard Diagnostics doesn’t seem to be available for Legacy drives.