Nothing, but the USB that was copied to the SSD was likely just the installation disk, which is pointless to copy to the SSD and makes installation harder.
Instead, put the SSD into the computer, boot the installation disk off of the USB and tell it to install LinuxMint on the SSD. This might avoid the issues you were experiencing with the root partition not defined/existing/being mounted.
Please follow @cpradio, he understood your situation better than I did.
If I was at your computer in that step, I would have used the partitioning menu to remove the 2GB partition and then go back and let the install set it up automagically, using the whole ssd.
Thank you for giving me the method to use for
the final leg of the installation.
I now have two SSDs one contains Windows 7,
the other contains Linux Mint Cinnamon.
They can be interchanged in less than a minute.
This finalizes the mission that I set out to achieve
seven days ago when @John_Betong started this
thread.
Thanks also, to all those who have helped me on
my circuitous and somewhat clumsy journey.
And a special thanks to John who managed to keep
my little grey cells fully occupied during this time of
the year that I, personally, find rather dull and boring.
Congratulations, I am delighted with your perseverance and sincerely think you will gradually warm towards your new environment.
May I suggest investigating the Software Repository (I think that is the name) which contains thousands of tried and tested applications which install by clicking a single button. Once an application is installed Linux Mint also updates automatically any other application dependencies ensuring everything is up-to-date.
Using the “Terminal” is also possible to install software applications but is more convoluted and may fail to automatically install and update critical dependencies. Software applications that fail to run after updates require extra “Terminal” effort to update dependencies, far better to take advantage of the “Software Repository”.
I don’t use any housekeeping but I do check for updates whenever I start Linux mostly because I like watching the updates flash past. I believe there is a Linux Mint short-cut but prefer using the termincal/command line:
CTR-ALT-T
a. opens command window
sudo apt update && sudo apt upgrade -y
a. request updates
b. && - to concatenate another command
c. request upgrades
d. -y overrides yes/no prompt
"********
a. password entered and hidden without stars showing
The above update usually takes less than a minute and seldom requires an update although I believe there is a recent feature which does not require reboots.
Also, once the command has been activated it is saved in the history and can be recalled by using CTRL-R. If it does not instantly appear then keep repeating CTRL-R until it does. There are other methods to view and select history items bu will leave that up to you to investigate
I do not use an anti-virus and just may have been fortunate in the past couple of years… who knows what 2019 will bring
I have used and dislike that feature because there was no visual feedback while processing. As mentioned I prefer seeing the updates flash past. I do use Update Manager on occasions to ensure I am using the fastest server that has updates, etc
Linux does not request the password for every command and I don’t mind entering the password because it ensures i really want to do something which the operating system considers dodgy.
Once entered the password is not required to be entered again for a default of 15 minutes which may be changed:
Is there a way to make Linux Mint ask for my password
at log in which would, I assume, negate the need for all
of these subsequent password requests?
Edit:-
I suppose that I am just being ridiculously picky about this.
Once I have the system fully up and running, the requests
for my password will, of course, be a great deal less frequent.
unfortunately, I missed your post as I was editing mine to
show a change in my poorly judged attitude to password
requests which did not take all things into consideration.
In Mint Mate 18.3 it shows first the downloading of files from all depositories and then the terminal output when installing the updates. In the Ubuntu Mate former LTS too.
Maybe later versions have a “simplified” default to not show anything but a progress bar?