I suggest you try to use the tftp boot method to get your old drive working in a linkstation again.
This will be the last thing you can attempt though.
The procedure is as follows:
1. Download the program here: ftp://24.153.165.234/disk1/share/nas-recovery/
in your case it would be the first one.
2. The Software is a self-extractor, so when the user click on file itwill ask them where they want to extract the files to. The Desktop is agood choice, but anywhere will work just as well.
3. Set the IP address on the computer to 192.168.11.1
4. Connect the Buffalo NAS to the computer, or for an easier way, connect the computer and NAS to a switch or router.
5. Launch the TFTP Boot.exe
6. Boot the Buffalo NAS into EM Mode. (This is done by holding the reset and power buttons together from a powered down state.)
7. It may take up to 60 seconds for the NAS to boot off TFTP and be detected by the NasNav.
You want to make sure that the TFTP program says "....blocks served" at the bottom. If it doesn't, relaunch the utitlity after one minute of waiting. If it says that "blocks served message" then run the 2.11 FW updater utility you can download from the support page of your model.