Currently Being ModeratedNov 20, 2012 11:14 PM (in response to Christine Kling)
you may have invisible files, that are not counted against your disk usage - where did you check the available disk space? In the Finder or with Disk Utility? Do you see the same amount of free disk space in Disk Utility?
One frequent cause for missing disk space are local Time Machine backups; if you are using Time Machine, see this thread:
Currently Being ModeratedNov 22, 2012 1:33 AM (in response to léonie)
That was it! Great to learn that Mountain does this when handling Time Machine back-ups. I can't afford that on this little solid state drive.
Thanks so much for your help!
Currently Being ModeratedNov 22, 2012 1:56 AM (in response to Christine Kling)
You are welcome, Christine. I have disabled local snapshots as well.
I added a script to my start-up items, that wil be executed when I log on again after rebooting the Mac. So I cannot forget to disable them again after rebooting.
If you want to do the same, open Script Editor and add this lines to an new apple Script:
-- turn local snapshots off
tell application "Terminal"
do script "sudo tmutil disablelocal" in 0 -- no local Timemachine backups
Then save the script and export it as an application. Now open the Users&Groups panel in the system Preferences and add your Apple Script to your Startup items.