Hard Drive 4Tb (GPT init) seen only 1.64T by Win7-Ultimate, but all 4Tb by Win7-Home?!?!

alex5161

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Jun 22, 2017
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510
I have 2 Win-7 OS installed on my old desktop: eMachine ET1331G. It is not able to boot with UEFI, but I was able to initalize 4Tb hard disk as GPT.

The systems installed on one hard drive - 1Tb.
I install 4Tb hard drive to be used only for data. (Having the OS installed on that drive I have already hands-up.)
But I have issues to see that 4Tb hard drive in full capacity!

If I am booting to W7-Home - I see 3.75Tb on that drive;
If I am booting to W7-Ultimate - it is only 1.64Tb
I need to use the W7-Ulimate and would like to have 4Tb on that disk

What is wrong? Why on W7-Ultm it is not accessable all 4 Tb

BTW: if I am bootting with WinPE-7x64 (on USB-flash) - also no problem to see all 4Tb

What could be done with the W7-Ultm to correct problem?
Thanks for helping!
 

alex5161

Prominent
Jun 22, 2017
3
0
510

Thank you for responding...
The W7-Ultm is x64.
Here the W7-Ultm screenshot with Acronis, Paragon and system's view on that hard disk:

Another scr-sht for comp-properties:


Let me know what else I could present or get from my system to have that situation understood and, hopefully, resolved!
Thanks!

 

alex5161

Prominent
Jun 22, 2017
3
0
510
So, where is the Tom's expertise?!?
No any 'helow' after my answer!!!

Anyway, I did found the problem: updating the SATA drivers in the system!
(I am lazy to provide details... No filling any obligation to this site!)