Windows Not Recognizing 4tb Hard Drive

Factual Questions
1

OK I was having trouble with my computer, so I did a clean install of my O/S and now it’s showing it’s up and running and all updates applied.

It is Win7 Ultimate, I didn’t upgrade to Win10 as I have it on my laptop and don’t care for it.

Now I bought a bigger SSD to reinstall the O/S on.

When I did this I also reformatted my storage disk which is 4tb. The O/S is on an SSD of 1tb.

So now Windows won’t recognize the 4tb. I initialized the disk to GPT and I still am only seeing 1.6tb of 4tb. I have tried various solutions I looked for online and nothing works.

Here’s the thing I went back and put in the old drive which still has the O/S on it and when I do I see the entire drive and it will allow me to format it all the way to the 3.6tb of 4tb windows allows.

So this tells me that it is not Windows nor the BIOS or anything (I am not booting from the 4tb and it’s 64 bit so that shouldn’t matter).

Am I wrong to think this is a driver issue?

I have all the latest drivers, I went to my device manager and let Windows search for latest drivers on the hard drive as well as download the Intel Driver’s update and it says I have the latest ones.

So if it is a driver issue, how to go about getting the correct ones?

It’s a Hitachi drive but the website tells me they don’t use special drivers and the generic ones will do.

Thanks.

2

Just a thought, has Windows installed the latest Win10 drivers on your Win7 system?

I find Windows to be rubbish at providing updates and prefer to use Google to find them.

3

I just figured it out.

It was an intel driver located in the f6flpy-x64 Zip file

I downloaded it, then I went to device manager and under storage controller, I let Windows search the file for the best driver. I had to watch it install and reboot twice.

It appears the new drivers are:

jaStorA.sys and jaStorF.sys

At least those are the things that are different after I did this.

So it was the driver(s) after all. They certainly don’t make it easy, but then again since MS moved on to Win10, I guess why should they.

If anyone in the future has this problem don’t rule out the drivers.

Thanks everyone.

4

Oh yeah don’t believe Intel when it tells you, you have the latest and best drivers :slight_smile: