Dietmar

@Damnation Because it works for me on the Asrock z690 Extreme board and also on the Asrock z370 k6 gaming board, the only idea that I have is, that some settings on your Bios does not match for to upload those tables Dietmar

@Damnation Make sure, that Secure Boot is disabled in your compi Bios settings. With Microsoft I think, that then no Acpi Tables are taken from registry, only from Bios Dietmar

@Damnation They are both in this acpi.reg file: DSDT and SSDT2. It should work. My compi refuses to boot, after I offered him this acpi.reg file, which simple means, that it is loaded. The only problem that I had before was, when I take the DSDT direct out of the Bios. With the acpi tables taking from running windows, all is nice now. Everything works for me, even with acpi.reg from other compi Dietmar PS: By the way I noticed, that RWEverything reads out the loaded ACPI tables and not them from Bios. So, with RW Everything you can make a very quick check, if the tables are loaded.

@Damnation Here it is. Be careful, because your XP will not longer start if something goes wrong Dietmar https://ufile.io/ummtcs4q

@Damnation Only the needed tables, that you can see the processors in XP. No garantie that it will work, but I try. Before you click on the acpi.reg file, make sure, that you have a rescue copy of the whole folder system32 of your XP Dietmar

@Damnation I mean, that I make from your Acpi tables a single acpi.reg file and that file I send back to you. So you can test, if my hack for to load any acpi tables on any XP works without any tool, without any asl.exe, just by hand Dietmar PS: By the way, the asl.exe tool works also for newer versions of Windows. May be, that my hack of registry works there also and even on pure UEFI machines, oh, this would be a nice virus.. Via this way you should load up ANY Acpi tables on any Windows PC. Anyway we have now a 4. methode, for to upload any Acpi tables and may be, that this is the most universal.

@Damnation Send me your wished tables, which you want to upload. I upload them to my Registry and make an *.reg file from them. Only risk for you can be, that your XP installation may be destroyed after, when you install this *.reg file. For to overcome this risk, make from an outstanding Windows a copy of your system32 folder and rename this copy to system32rett. When something went wrong, you just choose this system32rett, delete damaged system32, and rename it system32rett to system32 Dietmar

@Damnation Where is limit in the sky, I just succeed to upload a different DSDT without any asl.exe to registry , and indeed THIS new DSDT is loaded from XP SP3 after reboot, and stays there until I delete it by hand from registry.. Dietmar EDIT: This overcomes any signing limits or versions limit of the DSDT. I also "succeed" to upload the DSDT and SSDT from the z690 Asrock Extreme board to the z370 Asrock gaming k6 board a, only mistake I see then is, that suddently the i8700k cpu of the Asrock k6 board has 24 cores^^..

@Damnation Here is the compare of HKLM from XP SP3 without ASL (named ORI) and with ASL. You can see, that asl.exe does a very simple job. Some is there with Cryptographie, which I dont understand. But mostly asl.exe puts the table DSDT in this key [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\ACPI\Parameters\DSDT\ALASKA\A_M_I_\01072009] So, any with asl.exe uploaded DSDT and also SSDT comes into ControlSet001\Services\ACPI\Parameters\DSDT ControlSet001\Services\ACPI\Parameters\SSDT Dietmar https://ufile.io/v4btld4z

@Damnation Oh, soso much fun. With a ram boot XP I extract the whole registry HKLM. Editor needs even in ram some time for to open this 52 Mbyte *.reg file. And then I let asl.exe upload its tables and read again whole HKLM out. Before reboot I compare both registries then with Beyond Compare 2 Dietmar

@Damnation I think, even without the asl.exe tool you can add the acpi tables by hand to registry. This I will try now. My only problem in this is, how to translate the Hex *.reg outread from Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\HARDWARE\ACPI\DSDT because this outread contains "," and linebreaks instead of pur hex code Dietmar

@Damnation The asl.exe has a BIG downside: ALWAYS test your dsdt.aml files with another methode before!!! Because when your DSDT or SSDT has an error, asl.exe uploads this fatal table also to the Registry of your XP and makes XP unbootable Dietmar From Microsoft: Using the Microsoft ASL compiler's ACPI-table-load feature During system development, it is useful to have a way to simulate various ACPI BIOS constructs and test them on the development system. The Windows operating system allows certain ACPI tables to be loaded from the Windows registry instead of from the PC's BIOS ROM. Use of this feature requires administrator privileges, and also requires that test signing be enabled on the system. For systems that support UEFI Secure Boot, test signing cannot be enabled, and the compiler's table-load feature cannot be used unless UEFI Secure Boot is disabled or the Windows Debug Policy is installed on the system. To use the table-load feature, the ACPI table to be overloaded must meet the following requirements: The table to be overloaded must already be present in the system's BIOS ROM. For instance, the DSDT can be overloaded; however, if the machine does not have an SSDT, you cannot force an SSDT to be loaded from this registry override mechanism. The table must contain AML code that is normally consumed by the Windows ACPI interpreter (the Acpi.sys driver). The table with the highest version number will be loaded. The table loaded into the registry for testing must have a higher version number than the same table in the BIOS ROM. The table to be loaded must be in compiled (AML) format and loaded into the registry in the correct location, with the correct parameters specified. The mechanism described herein is designed to handle all aspects of loading the table and configuring the registry.

@Damnation I think, the table that you want to upload has to be newer than the table, that is already in use Dietmar

@Damnation This asl.exe Tool is easy to use: 1.) Put asl.exe to the root of your XP, means copy it to C:\ 2.) Copy your compiled Acpi tables also to C:\ for example dsdt.aml . 3.) Type then at command line C:\asl /loadtable dsdt.aml 4.) After reboot, this new dsdt table, which is stored in Registry, is loaded from XP. 5.) For to unload this dsdt table type at commandline C:\asl /loadtable -d dsdt.aml 6.) After next reboot the original dsdt table from Bios is loaded. 7.) For ssdt1 table etc. you do the same, just load one table after the other with asl. 8.) Nothing is changed on your motherboard, because the tables are only stored in Registry of your Hardddisk with XP. 9.) I do not think, that this works for Server 2003, because this one takes its acpi tables always from Bios and not from Registry, so the DSDT upload patcher from @Mov AX, 0xDEAD or the grub2 from you should work Dietmar asl.exe Version 5 https://ufile.io/y8e5iz3r

@Damnation The asl.exe V5 works also. The advantage from this tool is, that under XP SP3 the modified tables are stored in Registry and you dont need to upload them always new Dietmar

@Damnation Can you see a difference in the DSDT tables beween the power cores and the "efficient" cores of the 12900k cpu? The 12900k cpu has 8 Power cores with Hyperthreading, shows 16 "cpus" and 8 efficient cores, so all together 24, which numbers are NOW shown correct in processors Dietmar

@Damnation Waaaoohhh , now we need Tutorial, how to make this Dietmar PS: Power consumption goes down from 44 Watt --> 1.6 Watt. This I like a lot, because in this winter here in germany people will die because no money for HEATING! Asrock Extreme z690 with 12900k cpu before DSDT mod from @Damnation after

@Damnation Yes, this is the board which consumes a lot of power for nothing. The same is true for all the other z690 boards, which I have. But this board is the most XP friendly board and stable. When you have mood for, I am happy when you make a try for to modd the DSDT files and I will report then Dietmar PS: Now we 3 possibilities to upload acpi tables.

@Damnation Here they are, from the Asrock z690 Extreme, which is for me the most most XP friendly board. I use latest iasl from March 2022 and extract under win10 Dietmar https://ufile.io/piqd5ke6

@Damnation Oh, we are all blind as much as possible. I just check the asl.exe Tool V5 from Microsoft. It works also, IF you dump and modify the DSDT files from running XP. If you are as "clever" as me, extract DSDT from Bios, modify it and upload it then, with any of the 3 methods you are forced to flash the Bios with this DSDT or you get always this acpi.sys error. Really crazy, I spend hours and hours with flashing Bios only because of this mistake^^ Dietmar PS: Here is the asl V5 tool. It works, I just test^^ https://ufile.io/rtk8elu3

@Damnation Yessssaaa grub2 works for to upload any DSDT table Dietmar

@Damnation Ok, now the @Mov AX, 0xDEAD DSDT patcher works for me, very first time that I succeed to upload an own DSDT on boottime to XP. Now comes your grub2 for to test Dietmar

@Damnation After crazy experience with the Tutorial from @Mov AX, 0xDEAD I succeed to load my DSDT with his patcher. Crazy, first I need to understand, that his reload.bin is nothing other then the binary file dsdt.aml . And voila, I get the same(!) acpi.sys error as with the grub2 methode. Now I think, after a short comment from @Mov AX, 0xDEAD, that it depends on the dsdt.aml itself. You are not allowed to take it direct from the Bios. Instead of this you have to take it from running XP. Ok, next try and may be that via this way I also get the Microsoft tool asl.exe to work Dietmar

@Damnation Yes, I can see my file dsdt.aml there. But when I boot XP, it gives me the same acpi.sys error. So, this methode seems to work only on AMD boards. I will try the Tutorial from @Mov AX, 0xDEAD Dietmar

@Damnation How do you boot your compi after grub> acpi (hd0,2)/acpi/dsdt.aml And the dsdt.aml is NOT the dsdt.dsl renamed file? I think, that dsdt.aml has to be the binary file which you get after iasl runs over dsdt.dsl. I have no idea what I can do more here with ETB Dietmar