[coreboot] Windows only seeing 2GB of 4G (Seabios

[Naveed Ghori]

To close out this topic.

Windows 7 (32bit) can address maximum of 4GB so the default setting of 2GB for MIMO will reduce the 4GB to 2GB.
If I setup MIMO memory to be 1GB then I can see almost 3GB (2.92MB). The rest probably used by graphics etc.

Regards,
Naveed.


-----Original Message-----
From: Naveed Ghori 
Sent: Wednesday, 8 June 2016 10:27 AM
To: 'Nico Huber'; Zoran Stojsavljevic
Cc: coreboot
Subject: RE: [coreboot] Windows only seeing 2GB of 4G (Seabios

Thanks Nico,
What options should I be looking to tune? 3Gig should be fine as that is what I have seen in another product. 

However in that product (non coreboot) It says for "Installed Memory (RAM)" as "4.00GB (2.89GB available)": So windows actually shows both what is installed and what is available.

Regards,
Naveed
-----Original Message-----
From: Nico Huber [mailto:nico.huber at secunet.com] 
Sent: Tuesday, 7 June 2016 5:37 PM
To: Naveed Ghori; Zoran Stojsavljevic
Cc: coreboot
Subject: Re: [coreboot] Windows only seeing 2GB of 4G (Seabios

Hello Naveed,

On 07.06.2016 07:21, Naveed Ghori wrote:
> But I should still see 4GB without any patch. Right?
no, I'm afraid not.

> Windows only see 1.92GB as “Installed Memory (RAM)” in Control Panel->System.
This is correct as the 4GiB address space is not only used for RAM but shared with other resources on modern systems.

> I am happy for the system to see up to 4GB only.
It might be possible to tune the configuration a little. But you'd never get the full 4GiB. About 3GiB is a common limit today if you really want to run a 32bit OS without PAE support.

Nico