“Try quitting applications”
The disk “X” is in use and could not be ejected.
Try quitting applications and try again.
I get this error message a lot on my Mac. And it’s so completely irritating. “Yeah, just… you know, quit some things and try again.” T_T
Yesterday someone showed me a way to identify what’s holding onto your disk. Just type this in your Terminal:
lsof +D <path to disk>
[mycomputer:~] guest% lsof +D /Volumes/LaCie/
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
AdobeRead 11375 ..... ... ... .... ........ .... /Volumes/LaCie/dsp.pdf
… So if I quit Adobe Reader, I can then eject LaCie.