Found a fix a last now do not need disk thanks your help anyway happy flying in these troubled times.
Thank you everyone for your help have now found the fix here
‘‘Redirecting’’
I still say as the box set you have a key code and have to register it with M.S. no point in having to put in a disk, You can’t pass the software on or sell it as registered to you.
Hello,
At the beginning I was annoyed with this need for insertion disk 1. I made an ISO file from the disk 1 on an external drive always connected to the PC and now I have only to click on MOUNT before starting a flight. It works fine but I’m sure a software solution would have been possible to avoid such manipulations (and lost of time about this stupid problem).
Best regards
You said it in one. It is so ridiculous to do that and if that disk for what ever reasons packs up you loose the software more importantly flying time. I was also surprised that they did not supply a manual as they have said all along they want to attract more flight simmers. Well you have lessons for a car or flying lessons for flight. Oh well such is the Microsoft world. It is a great flight sim anyway and enjoying my transition from P3DV5.
Stay safe. Hands. Face. Distance.
Yes, the “insert disk” is useless and rather annoying. I also bought the disk version due to very low internet speed and no fibre or high speed availability in my area. Thanks to the post outlined in https://forums.flightsimulator.com/t/tip-for-dvd-users-save-drive-space/199070 I have made an ISO file and virtual drive as outlined in that post. Once installed no need to mount every time and strait to flightsim! Thanks very much to the person(s) who posted and/or highlighted this solution! 
Yep its a truly useless and entirely unnecessary idea. Whoever dreamt it up and insisted upon it…
This is for lazy or advanced users.
Let the PC mount the drive and ISO file automatically, when it starts up.
Move the ISO file to the root of the C: drive. Example: C:\StartKeyMSFS.iso. (Not really needed, but it makes life easier due to shorter file paths and file names).
Start Notepad and copy these two lines:
PowerShell Mount-DiskImage -ImagePath “C:\StartKeyMSFS.iso”
exit
Save the file as a batch file in the Startup folder. Path is C:\Users>YOUR USER NAME<\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup.
Filename is StartMSFS.bat or whatever you like. It must be a *.bat file, however.
Restart PC and check.
Yes I found an even better one not sure where now but they kindly put a file on the cloud and I just open that file and vola it works a dream. Complete waste of time though and feel a PC Pilot email coming on. They must think we all have superfast broadband, not the best way to start and they want to attract new flight simmers, think I would have given up by now if hadn’t been flight simming for the past 40 years. Thanks for reply by the way
I made a ISO and it works fine but 50% of the time the ISO is not mounted, when I click on it all is OK. Does everyone have to do this?
One quick word about disk copying: if you read the licence of any software it will say something like “no unauthorised copying”.
But copying a disk in order to save wear and tear on your master disk isn’t “unauthorised”; in fact it’s encouraged, even by Microsoft. They’d rather you did that than have to supply replacement disks on demand.
You will lose the mount whenever you reboot your pc, that may explain why you are having to remount your iso
Thanks for that,