Cant Erase USB Data...

[Mac Mane]

...Every time I try to erase music from my USB Key or Phone.

You can see that the music or files have been erased, but it doesnt free up and space. When you pop the USB Key into the stereo or play music on the phone, all the files are there.

I have to go through the Disk Utility option to erase stuff, but this erases everything.
When you erase on the PC, everything is fine.

Can anyone help with this?
Is there anything I'm missing?

 

[miles01110]

Are you emptying the Trash after you move the files there?

 

[old-wiz]

and you have to empty the trash while the usb device is still plugged in.

 

[andalusia]

Are you emptying the Trash after you move the files there?

and you have to empty the trash while the usb device is still plugged in.

Listen to these people. After you've deleted the files, go to the Finder drop down menu and click on Empty Trash (Cmd-Shift-Delete). After that you should find free space and you can then eject your disks.