I made an awful mistake. It's 1.2 TB, not GB. Paul Moortgat On 23 Feb 2014, at 11:49, Christopher Collins wrote: 1.2GB is not enough space on a startup disk. Most things I have seen suggest always keeping approximately 10% of the available disk space free. cjc On 23 Feb 2014, at 7:56 pm, Paul Moortgat <paul.moortgat at pandora.be> wrote: > When I woke my Macpro (10.6.8) there was a message that told me this: > "Your Mac OS X startup disk has no mor space available for application memory" > > I had to close windows and remove files from the disk to continue. > I still had 1.2 GB free on the disk. There's 12 GB memory RAM. I just restarted and all is well now. > > I wonder where it comes from. > > Paul Moortgat