Thanks for your suggestion, and upload of the efi boot. Well, it was a great and noble try. I successfully booted the USB EFI boot stick, and setup_var 0x39 to 0x0 and it reported successful on my Lenovo s21e. Then, I rebooted with my slipstreamed XP service pack 2 memory stick, and I *still* got BSOD 0x7b error and no successful detection of the Samsung 32 GB SSD drive OR the USB drive in Windows XP install. Maybe I need to slipstream additional drivers, but Win8 shows Standard ATA Controller now under "Disk drives" where I don't think it did before the setup_var 0x39 0x0 patch. Do I need to modify additional bytes using the EFI boot stick?

Yes, I used NLite to integrate your modded drivers: "Universal 32bit Intel RST AHCI & RAID driver v11.2.0.1006 re-mod by Fernando.rar" in the Bay Trail thread, since my Lenovo s21e has a Socket 1170 N2840... I used an original XP service Pack 2 source, but if it makes any difference, I can try XP service pack 3 as well.

The initial probllem was that I couldn't select "IDE / SATA" mode in BIOS, it was hard-locked to AHCI only. I used the w700 EFI boot shell USB bootable program to manually enable IDE as setup_var 0x39 0x0 in BIOS. That worked, but I still get BSOD 0x7b in XP install and no recognition of Samsung eMMC SSD in XP install, even using your integrated textmode drivers file above.

Hello Fernando - I built a system with an ASUS Z97-A mobo, and need to install XP
because it is necessary to use a PCI board and software that won't run on anything newer
Igot an ISO of Windows XP 64bit SP2, and used NLite to add the "Universal 64bit Intel RST AHCI & RAID driver v11.2.0.1006 mod by Fernando."
I connected a separate SATA drive,
and set the BIOS up for AHCI. The latest BIOS is installed. It boots off the CD and goes all the way through the installation,
then blue screens with the message about it not being ACPI compliant
Do you have any suggestions for me? I install XP 32bit SP3 In AHCI Mode As Your Direction But 64bit Is Not Install & 64bit Very Needs Because Some Softwere Run In 64bit like Adobe After Effect CC & Ulead Media Studio 7.0 Running in Only XP Many thanks in advance

x64 multi proseccer x64 uniproseccer and other all option select for installation but same result please help me

Sorry For my English please tell me About ACPI Setting which option select for installation

Bios Setting in AHCI mode & another i try to install Windows Xp 64 in IDE mode but no result blue screen or XP 32bit SP3 running fine in IDE mode is & in AHCI mode As your instraction installation in Complete but XP 64 not install in IDE & AHCI mode with AHCI driver modification & Without AHCI driver modification please help me Thank you

Zitat von drgary83 im Beitrag #321

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I'd hoped to do the same with the Gigabyte EP45-UD3L (Intel ICH10 -- not 10R!) But am having big trouble doing the driver updates through device manager, as shown in those pages, which worked fine on the ICH9R MB. In IDE mode, the controllers show different hardware IDs than included in your universal .inf. So the update process involves guessing which of your DEV_3A03 or DEV_3A23 to associate with the 2-port 3A26 and which with the 3A20. That may not be the whole problem, though -- I just don't know.

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