Only 1TB of 2TB WD Green drive available

[CreepingD]

Hi Everybody,

I've been having problems for a while now with my Western Digital Green 2TB (WD20EARX) drive.

I used to use it together with 3 other identical disks in a synoogy NAS. The NAS and other 3 drives have been sold for a while. The fourth disk I use now and then for temporary storage.

Problem: For a while now it shows as 1TB. I don't know exactly what triggered it. Up to now I just used 1TB but now need 2TB.

On my pc the disk sits in a HDD dock and this is what I see in disk management:


on a second PC in the bios it also shows '1000GB' and on a synology NAS it also shows 931GB.

The drive doesn't show any visible/hearable/performance/smart problems. It is out of warranty.

Any idea what caused it of what the sollution could be?

Thanks in advance for any advice

[CreepingD]

By the time this topic was aproved it was solved uzing info found in other threads.
I used HDAT2 to disable HPA.

It's now in my new nas accompanied by a brother building a raid 1.

[MindMergepk]

glad you found the solution from this forum.