eMMC disk in WinXP 32/64-bit

[reboot12]

I have a Dell Wyse 5070 test machine with two disks - eMMC 16 GB and M2 SATA 128 GB

I installed on M2 WinXP 64-bit in pure UEFI and the OS works well. I have ported eMMC drivers but the system does not see eMMC disk both on system drivers and on those ported. There is only an SD controller device in the Unknown section in the Device Manager:

I added HW ID PCI\VEN_8086&DEV_31CC controller to the sdbus.inf file but nothing helps.

eMMC_xp64.zip

Installation of the KB934428 update does not help either.

P.S. Same eMMC disk works OK in Win10:

Edited July 21 by reboot12

[reboot12]

I found information that for Windows 7 to support the eMMC disk you need to update the storport.sys file - Windows6.1-KB2732471-v2-x64.msu
https://www.sevenforums.com/drivers/429158-how-do-i-run-windows-7-emmc-laptop-post3528065.html
https://www.sevenforums.com/drivers/429158-how-do-i-run-windows-7-emmc-laptop-post3528072.html

https://www.betaarchive.com/forum/viewtopic.php?p=480427#p480427

KB2732471-v2 update storport.sys is 6.1.7601.17956

I use WinXP x64 AHCI, NVMe ported drivers from @George King and storport.sys 6.1.7601.25735. If the version is newer, it means that it contains eMMC fix from 17956 ?

Edited Sunday at 01:02 PM by reboot12

[user57]

wasnt that dietmar´s terretory ? 
it is nice to have a kernel extender that provide these missing functions or maybe a missing piece
that might be a solution

there is maybe a different approach to solve this problem - a driver from that company 

today´s OS such as win10 provide standart functions to solve this for a device - then something like this project just works without having a own driver

the problem we faced here is that win10 has newer codes in the relevant drivers - its like a standardized code to control certain devices
the problem with that is that this is not very OS-independant

the most drivers/or and devices useally define 3 basics:
writes
control 
read

these are somewhat somehow written into that standardized code 
a driver from the company could also provide the same thing - they neither have to bind a such driver to windows 10 functions 
it would be doable - then they might would have a few more customers

if lets say a XP see their product he could see "xp driver present" or something like that and buy it up
like that it is like limited to win10 

maybe you could ask in their forums about this

[reboot12]

Maybe the @George King eMMC driver is good, but the XP does not see the disk just like the Realtek sound card https://msfn.org/board/topic/186847-winxp-sp2-64-bit-on-asus-j1800i-c-baytrail/#findComment-1281009

I am also trying to use the eMMC disk in Win7 but also does not see the disk. In addition, if I restart the computer from Win7, the eMMC disk disappears in the bios (EMMC Device: none) and UEFI Shell (no fs1: Ctrl device):
 

To be visible, I have to close the system, disconnect the power cable for a few seconds, connect the cable back - I need cold start. Bios - EMMC Device: 16 GB, UEFI Shell: fs1: Ctrl device present:

Edited 2 hours ago by reboot12