Hi, does anyone know what a bios is classified by desktop or laptop!?? Which identifier in the bios plays a role!? Greetz
Hey there, This might not be a straightforward answer, but if you think about the main differences between desktop and laptop computers, there's one aspect that stands out - the RAM modules. Even so, I just recently wrote about Epson's ultra-compact desktop computer somewhere else, and they've actually used the same type of RAM modules that are commonly found in laptops. This decision was likely made to achieve the ultra-compact size they were aiming for with that desktop model.
I was not interested in a discussion of principles! I just wanted to know what parameters are set in the bios that distinguish a laptop and desktop. Are there identifiers or the like in the bios! Or do you just have to rewrite the DMI table and that's it?
@ralf ralf Instead of spamming the forums, it would be better if you state your end goal. In a nutshell, a firmware image of a BIOS isn't designed to target the form factor of the PC. When it comes to probing the hardware to discover the model information or what devices are present in the computer, a modern firmware relies on the System Management BIOS (SMBIOS) specification that defines data structures to expose all the management information.
Yes, SMBIOS and DMI. "Chassis Type" comes to my mind, maybe also "PC System Type". Examples from MRP QueryTool. Example Desktop: Code: Type Number : 03 Chassis Type : Desktop PC System Type : 1 Example Notebook: Code: Type Number : 10 Chassis Type : Notebook PC System Type : 2
It's plenty of ITX boards that uses SODIMMs instead of DIMMs, then there are NUCs, industrial PCs that use SODIMMs as well Then there are SBCs, ministick PCs, and many recent notebooks that don't have any removable RAM at all. In short RAM is not a good way to categorize a computer, at least not in 2023.
I looked in the forum for suitable topics. No direct hits found, but only similar matching! Therefore came my request.... Nevertheless, thank you for the answer. So you are some DMI and SM information let analysis software believe which system is underlying!?
The QT can be downloaded from https://forums.mydigitallife.net/threads/multi-oem-retail-project-mrp-mk3.71555/#post-1283849 The passwords are listed. My examples are from the non-GUI legacy version, but at least the PC System Type is listed by the new GUI tool, too.
Thanks for Link! Ok, I started the QT tool and it evaluates from PC System Type: Mobile! I also looked in a PC Bios in DMI table and Type 3 (System Enclosure or Chassis). There is no information there. What is the same between both bios types is Type 1(System Information) and Type 2 (Base Board or Module Information)!!! I assume the MRP QT tool takes the mobile information from Type 3? Would you agree with me?
Hi, do you know where the program reads this line PC System Type! Have now tried all possibilities in the DMI table! No change has set the PC System Type line also desktop. So my question would be: What exactly reads the program MRP QT Tool!? The DMI table in Bios Type 1 - 3 does not change the specification!!!
Not even sure if you can actually change this. This is surely more than one setting, e. g. different UEFI modules and tables in the firmware. As for the MRP-QT, I think @mxman2k would know best.
It is about changing these parameters in Windows: 1.PowerDeterminePlatformRole() 2. GetPwrCapabilities() It would be nice to have a script that changes these parameters. Like a bypass!! Does anyone know about such Windows functions. This function read directly the ACPI table in the bios. I would be fine not to change this table but only for appearance in WIndows....