Hope I got this straight, and this is the place to post questions:
Have made a persistent USB of Ubuntu 18.04. Which worked fine until I tried to boot my mac mini (2009) It booted fine for a couple of times then the boot partition got messed up. It won't even boot on a PC now. Here's the error message:
(initramfs) Mount: mounting/cow on/root failed: Invalid argument overlay mount failed.

Hope I got this straight, and this is the place to post questions:

Have made a persistent USB of Ubuntu 18.04. Which worked fine until I tried to boot my mac mini (2009) It booted fine for a couple of times then the boot partition got messed up. It won't even boot on a PC now. Here's the error message:

(initramfs) Mount: mounting/cow on/root failed: Invalid argument overlay mount failed.

I put a lot of time into creating and setting this up with apps etc. Is there a way to rectify this? 

Thanks, Charles

I;m trying to reset the MTU settings to enhance internet speed. Tried following several online guides, and as usual to no avail. Here's where I'm stuck:
To
display the current MTUs for network interfaces in Linux, the

I;m trying to reset the MTU settings to enhance internet speed. Tried following several online guides, and as usual to no avail. Here's where I'm stuck:

To display the current MTUs for network interfaces in Linux, the following command is suitable. (This must be entered in the shell/terminal.):

ip addr | grep mtu

If you know what this about, I probably don't need to try and explain...

Thanks, Charles

https://www.youtube.com/watch?v=GSudn0qB6u0
Are Linux Smartphones about to KILL Android?

https://www.youtube.com/watch?v=GSudn0qB6u0

Are Linux Smartphones about to KILL Android?