B8090 Series HDD Proprietary or Generic?

[rockdude]

I have been getting a lot of "Hang on Boot" machines from the Altalink B8090 Series.

I have the SD Cards in stock (Which is the normal culprit) but occasionaly it requires a new HDD as well.

Just curious if the HDD's are Generic or Proprietary?

When I perform the ALTBOOT does it format the HDD to what it needs?

Thanks in advance.