AHCI WD4003FZEX-00Z4SA0 Limited Capacity to 2TB (1801.8GBWDC)

AHCI WD4003FZEX-00Z4SA0 Limited Capacity to 2TB (1801.8GBWDC)


HDD Spec


[Deleted - Trancer]

Firmware 01.01A01

World Wide Name          5-0014EE-2B39E82F5

Capacity 3815448 MB

Motherboard Spec

Motherboard Asus P5Q-E


I had installed Windows 7 32 bit version, then I install my new WD4003FZEX-00Z4SA0 without any problem.

3 Partitions of 1TB+ 1TB + 1.7 TB


I fill of data the tree of them.

Then I decided to install an SSD + Windows 7 x64 and changed SATA mode from IDE to AHCI in BIOS

Then de BIOS read the 4TB disk as  a 1801.8 GBWDC, when windows start, ask for a check disk for the third partition, because it remain out of the 2TB size that bios recognize.

I really star a hard search but nothing goes well… including coming back to old HDD with Windows 7 x86 and SATA mode to IDE.

The Bios continued to assume the HDD of 2TB instead of 4TB !!!

Is there any solution ?

 I install the HDD in another PC and it works fine.

4TB HDD 1.jpg 4TB HDD 2.jpg