Stuck for applying permissions with Ubuntu 18.04

Question

This worked on an Ubuntu 14.04 machine. I just switched to Ubuntu 18.04. This isn't working.

It's all updated.

I plugged in an external drive. I went and looked at the drive through the gui, if that matters. It does matter on an Ubuntu live CD vm apparently. So I did that.

On the 14 machine, I had to do this initially with an external drive so I had permissions on it. Maybe I also went through the gui properties permissions to set that to read/write. It's been a while.

chown -R myUbuntu18account: /media/myubuntu18account/longdrivenumber

I thought that solved it in the past, at least on Ubuntu 14.

I tried copying -- both through the gui and from terminal -- but when I copy folders/files off the external drive, I only get some of them. The external drive folder might be 20GB. I get 500MB worth of files. I checked permisisons on the files in the folder and it looks like most don't have my account listed with read/write permissions.

Am I missing or forgetting something? I'm pretty sure on Ubuntu 14 I just plugged the drive in, got the long, unique number off the drive's properties, and did a "chown -R account: /media/account/longnumber" and I was good to go for working with the external drive, meaning that I could just copy to and from it with ctrl-c and ctrl-v.

Help!!! Maybe it's something with setting permissions specifically, chmod xyz stuff, but I don't remember having to do that. I'm looking at notes and don't see anything like that before. Plus, I popped drive in and out often enough I'd remember.

Please [edit] the output of `ls -l /media/$USER` with the external drive attached and mounted into your post. Thank you for helping us help you! — Elder Geek, Jul 26 '18 at 16:20
ls -l /media/$USER gives me.... (Fine, a new post since I can't hit Enter here...) — ubuntuthinking23523, Jul 26 '18 at 18:39
drwxrwxrwx 1 accountname accountname 4096 Jun 6 16:01 longnumberforexternaldrive — ubuntuthinking23523, Jul 26 '18 at 18:40
drwxrwxrwx 9 accountname accountname 4096 Jul 26 10:17 longnumberfor2ndexternaldrive — ubuntuthinking23523, Jul 26 '18 at 18:41

score 0 · Answer 1 · answered Jul 30 '18 at 21:06

Maybe it's this.
No progress bar when copying files on Ubuntu 17.10 There's a circle instead of a progress bar now. If I click on that, I do get the progress bar.

While copying, I got a permissions box pop up. Last week the copying eventually errored out. Today it appears to be moving. No other changes made to permissions. I did restart the machine, but I tried that last week too.

Stuck for applying permissions with Ubuntu 18.04

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