...snip...
Just a refresher about my setup. Win10 Pro is on a 250GB SSD. All data is on a HDD mounted in the Optical slot of my Laptop. The HDD holds all my Data Files, my Downloads and Temp files and the nominated location for Windows Virtual Memory, all of which are on separate partitions plus a Win 10 Pro 1703 Partition. I have relocated the usual File Explorer links to the appropriate HDD file location (F:\ My Docs, Videos, etc and T:\ Temp plus S:\ Virtual Memory) which allows me to Dual Boot when I need to do so such as during the 1703 to 1709 problem I had. I have used this type of setup since the start of Win XP with PCs and Laptops without problems for 16 plus years.
...snip...
(1) I've read one should let Windows keep its various Temp folders where it will. I would undo what you did with that. Especially, you don'twant separate installations using the same ones. But even just one installation should let them be.
(2) I guess I filled in the blanks incorrectly on what you wrote previously. Somehow I thought both installations ended up on the HDD. I thought you removed the SSD to put the DVD into its a slot. Then, you booted to the DVD through UEFI/BIOS, opened unallocated space on the HDD, & installed v.1709 to it. That would have established a true dual-boot situation.
(a) If the SSD has v.1703 & was removed while v.1709 was installed to the HDD, you might be able to boot to each by fiddling with UEFI/BIOS before each boot - but you aren't getting the Windows boot selection screen - are you? How many items show up at in MSConfig (ask Cortana) at the Boot tab...?...
(b) I want to know whether the HDD is Disk 0 or Disk 1. I've seen some complain that Windows Update won't work for disks that aren't Disk 0, (though it shouldn't be). Open an administrator PowerShell or Command Prompt, and enter each of the following. Then, use the Snipping Tool (ask Cortana) & the Insert Image icon above your post to post it.
DiskPart
List Disk
Sel Disk 0
List Part
Sel Disk 1
List Part
List Vol
Exit
On page 6 (Feb 5), you said...
" I have opened a new partition on the HDD and installed 1709 onto that with nil problems using the latest 1709 .iso on DVD from startup for that purpose. For some reason my SSD, located in what was the optical drive bay, continued to be recognised as USB upon boot so I was unable to use a usb memory card for that purpose ( yes, I had to remove the SSD to allow me to remount the DVD player and reboot twice to get the fact recognised). I would have preferred to have loaded the 1709 version to the SSD but when I put the SSD into the laptop HDD slot I had startup problem as the drive was not recognized."
On page 7 (Feb 6), you said...
"No problem with the SSD as it was not mounted, sorry you have lost track but I was trying to install 1709 on the HDD with the DVD player in the slot I now use for the HDD. The addition of the SSD has only been since, NOT DURING and fits in the DVD slot of my LAPTOP
MY LAPTOP NOW HAS 1709 LOADED AS CLEAN INSTALL, NO USB DEVICES AND DRIVERS RELATING AND NO SSD!"
=== I think you meant "the slot I now use for the SSD".
On page 7 (Feb 13), you wrote...
"I do not see the link. New partition by opening space from existing partitions, clean install from DVD. Maybe I am just thick but nil partition content plus DVD content cannot generate 48GB of old file, unless the installation dug up old deleted files from a prior use of that section of the HDD. WHY WOULD WINDOWS DO THAT WHEN "KEEP NOTHING" WAS SELECTED for a partition containing nothing. Yes I have got rid of the lot and I did not bother to see the content, it just was very odd."
=== I'm still puzzled with that. Did you actually have a Windows.old folder, or just a $Windows.~BT &/or a $Windows.~WS...?...
https://www.howtogeek.com/268667/what-is-the-windows.bt-folder-and-can-you-delete-it/
What Is the $Windows.~BT folder & Can You Delete It?