I have recently come across a Buffalo Terastation to which no one knew the administrator login. As there is no functional reset button, like one would find on consumer-grade routers and such, I had to go to the Buffalo website. Unfortunately, according to their documentation, one is supposed to create a recovery USB drive for cases such as this. As I cannot access those menus without the administrator login, that was pretty much useless.
I then found this post on their forums that discusses connecting a KVM to the NAS, putting the device in recovery mode, and flashing freshly-downloaded firmware to it. That seemed like what I’d have to do (and appears to still be the best option if you need to preserve the data on the device).
However, the device’s downloads page (your model number may vary), it turns out that you can download a “Bootable USB recovery image for TS5000 series”. This zip file contains DDWin, a program to write the image to your USB flash drive, and the image itself.
After running DDWin and writing the image to my flash drive, I could then refer back to Buffalo’s recovery instructions:
Recovering with the Boot Mode Switch (TS4000 and TS5000)
The boot mode switch is on the rear panel. You can recover by changing this switch when starting the TeraStation.
- Connect the USB memory device with the saved settings to a USB 2.0 port of the TeraStation (not a USB 3.0 port).
- Set the boot mode switch to “USB”.
- Press the power button to turn on the TeraStation.
- When the message “Recovery I41 PushFuncToStart” appears on the LCD panel, press the function button.
- Setting recovery starts. The TeraStation automatically shuts down when recovery is complete.
- After shutdown, “Recovery I39 Change Boot” is displayed.
- Set the boot mode switch to “HDD”.
- Press the power button to start the TeraStation.
IMPORTANT NOTE: This will delete all of the data off of the NAS. Don’t say I didn’t warn you!