I reckon you're right! thanks rbaker

@clyde many thanks.

@mitu in this case he got the message because he deleted known_hosts on our recommendation.

I am curious why you would specifically want the Finder for this? Why not use a decent (S)FTP client like Cyberduck or Fugu?

@bowman I have never had to use any additional software for file access from my Mac to Pi3. I have always just used the Finder, Go menu etc.

That said, you may have a folder permissions issue that you could check using command line. It will be in your long term best interest to pick up some linux command line knowledge and try connecting to your Pi with SSH. You may need to use the pi config to enable SSH, but once done, you can get in using Terminal. Try ssh pi@retropie.local and use the password raspberryto login and now you can navigate with command line to check permissions, delete files that are not visible from the Finder, etc.

Or you could try resetting the ROM directory permissions using the technique in the FAQ. This would be a lot easier if it fixes things.

@raymate have you looked at openemu? Pretty much the majority of the same software

@hurricanefan It was only $3.99 lol. Works great!

@dankcushions ok, I'll try them. Thanks for input. Hopefully they can figure it out! Thanks again.

@StuMcBill
The IP address of 192.168.0.xx is typically a router IP address, and port 22 is the SSH port. You may want to check to see if your router is blocking this SSH port.

@castroe_10 Etcher is meant to verify the image as part of the writing process. However, it may be a few things. The image you downloaded may be corrupt. It happens from time to time or the card may well be the issue. I suggest redownloading the image and starting afresh. If that doesn't yield a positive result try a different SD card.

@pjft

Actually, they don't.

When I transfer via USB, the autocopy feature doesn't duplicate them. They only exist on the stick.

And when I do manual transfers in file manager (of bios or themes), I ignore them, so no sweat.

Quick tidy to add @caver01 's latest tip, just the sort of stuff we need, VERY useful!

you should be ok, as i said i am on a mac too and i have been using emulators since the days of mame .29, as well as pretty much every system out there, i have never had to use any other apps to decompress files.

bear in mind though, that mame roms should be left as zipped files, there is no need to unzip them. it may be that in the past you have got roms from an 'unmerged' set where if you don't have the parent rom with all the relevant files in it any variations wont run.

No, I have not access samba shares via the mac before. I do have file sharing enabled. arp -a returned the following
Kxxxxxx-Mxxxxxx-MacBook-Pro:~ kxxxxxxxxxxxxx$ arp -a
? (10.xxx.x.x) at f4:3e:9d:3:65:15 on en1 ifscope [ethernet]
? (10.xxx.xxx.xxx) at ff:ff:ff:ff:ff:ff on en1 ifscope [ethernet]
Kxxxxxx-Mxxxxxx-MacBook-Pro:~ kxxxxxxxxxxxxx$

it does not find the Pi

@backstander it's not work both of them
he ask me for IP and password and when I type the default one he said it's wrong :(

@Pixel0501 when you say "my" password, you aren't talking about your Mac OS password are you? The default password for retropie is ........ raspberry. Another question is have you logged in via ssh before? Because if you have and had to start over by reinstalling retropie, Mac OS has a security feature that keeps logs of MAC addresses and ssh keys, and when you try to log in again it will stop you since the new retropie install will not be using the same key. Mac OS tells you though and tells you what file you have to edit to remove that log.

@MEPoss Did you enable SSH?