I "read" 641 not 64I and after perusing 143 pages of thread I came across 42A, a logical update of 41, and so used it.
But, no matter, after copying a WIN7x64 dvd to a disk folder and using 641, I converted the resulting folder to an ISO using Imgburn. Rufus v3.11.1678 produced a USB which booted up nicely back on my WIN7X86 target machine and accepted a USB mouse (so the USB3 drivers were included). However, upon reaching the partition selection page the nvme drive did not appear and so I could go no further. All the sata partitions showed but no nvme partition.
I then tried all of this again using a WIN7X86 dvd on the nearby x64 o/s. Bringing the new USB back to my x86 and booting it fared no better. Even tho the current x86 o/s could use the nvme drive as data storage, the new x86 boot could not get to it.
What next, the world wonders....
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Ok...
I have tried:
1. WindowsImageTool from GA. It inserts the USB3 drivers but not the nvme driver, even when asked to do so.
2. Win7UsbPatcher(v2.0.21_Braswell) from Asrock. Same results as above.
3. 7UPv64I from SIW2 running on a 64bit machine, and ported back. Again, same results as above.
I'm beginning to think that I have been incorporating the wrong nvme driver. I am running a KabyLake I5 on an Asrock Z270M Pro4 m/b. But I don't see an nvme driver in all of the driver downloads from Asrock. The KB2990941 hotfix allows the nvme drive to be seen by Win7x86 and used as a data drive, but that's all.
I shall try Integrate7, altho I don't want to add the Win7 updates to the results just yet. I have to figure out how to stop this.