Hi again Warren. Using
passwd maneagle
is a good try. The password is sensitive to upper case and lower case letters though, so as long as you tried those correctly (or what you thought they were)... then it does seem like you forgot the correct password. This can be reset, but it takes a few steps.
@arochester's link above is accurate, but just a bit outdated judging from the GRUB version.
Here is a link that explains the same process, but just shows a more recent GRUB screen. Both of these links are showing Ubuntu, but your Linux Mint should be almost exactly the same. Read through both of the links to get an understanding of what you need to do. Your Mint may even be a bit older and use the older GRUB, so you just want to get a feel for this task. It isn't hard.
From what you have said, it is your user
maneagle that needs the reset. But Linux Mint is a bit funny... in some cases you may have also created a root user password, and in some cases you may not. If you ever did create a root password, then you would need to know that to make the steps in the links work! That's okay, there is a way around that too, but let's don't go there if we don't need to. Try the method in the links first.
Here is a brief outline of what the links are telling you to do:
1. If your computer boots straight to the Mint desktop and you never see the GRUB menu, then you'll need to use the SHIFT key when booting (before Mint starts) so that you can see GRUB. You may have to play with this to make it work... try tapping (or long taps) on the SHIFT key when booting or restarting, and if that doesn't work, try holding the SHIFT key down when booting.
2. Depending on old GRUB or new GRUB... you may see the (recovery mode) on the first screen, or you may have to choose "Advanced options" first, and then you can see the option to choose recovery mode.
3. When you choose recovery mode, you will see a LOT of text flying by on the screen. Just wait for it. It will finally get to the screen shown in the links where you can choose to "drop to root shell".
4. When you choose drop to root shell, if you do not have a root password set (which we hope)... then Mint will just tell you to hit Enter to get maintenance mode. If this is true, go to the next step below. If it needs the root password to get maintenance mode, then just give it up and reboot... and come back here for us to go a different way.
5. If root password was not needed, then you should not be in maintenance mode. The next few commands are where you will actually reset the password, and it's very important to get everything correct here. The first command you must give exactly is this:
mount -o rw,remount /
. (Note the comma between rw and remount, and note the / at the end.)
6. The next command you must give is this:
passwd maneagle
.
7. It will prompt you to enter a new UNIX password. You won't see any **** characters, or any movement of the cursor.... so just type the new password very carefully (be sure your CAPS LOCK is off). You will have to type the password twice like this, and it will tell you that you were successful.
8. Next, enter this command:
sync
and then enter the command:
reboot
.
With luck, when you get back to your Linux Mint desktop, your new password will be active and ready to use. Test it out by opening a terminal and giving the command:
sudo apt update
to update your system repositories. After that, you can use
sudo apt upgrade
to upgrade the software that is installed with your Mint.
Good luck!