@OstroL: I edited the Win 10 registry entries and changed BIOS/UEFI RST driver setting to AHCI.
Windows booted normally and I haven’t seen anything wrong yet. So looks like it has worked…
Thanks for your guidance… Really appreciate.
After this change, one other issue seems to have arisen during booting with the Ubuntu 18.04 USB
that I had used earlier to test Ubuntu on this laptop. So haven’t been able to test if Ubuntu is now
recognizing the SSD or not.
The new problem is that after booting from Ubuntu USB the following message
is appearing before the laptop just shuts off.
“Failed to open \EFI\BOOT\mmx64.efi - Not Found” etc
This error and one solution is here : https://letsfoss.com/fix-efi-boot-mmx64-efi-not-found/
But I found many more references on the web and more complex solutions.
Haven’t tried any solution yet. I will do some reading and then attempt it.
Will report if Ubuntu is working with SSD and HDD after that.
Thanks again.