WD6400AARS really slow

Hello guys,

recently I received this disk as a gift, installed Windows 7 on it and set the AHCI standard.

The drive seems REALLY slow, the loading time to log in into Windows is taking too long, opening the applications is taking tons of time, and if you try to multitask it basicly freezes the whole system for a while.

I have never had disk problems before and I really dont know what could be causing problems, or what can I do to fix this.

Please help!

Hi there, that drive has 4K sectors… What if you check if they need to be aligned? To have that drive work as it should on W7 it needs to be initialized as a GPT drive instead of MBR.

Here are the instructions on how to properly use the alignment tool.


Could we see a HD Tune read benchmark graph?