In a 2011 Macbook Pro, I have replaced the SuperDrive with an SSD. Now, I have an OSX partition for the OS in the SSD, and most of my data is on another HDD, connected by symlinks (i.e. Documents, Downloads, Desktop, Dropbox, etc.). For the following, the name of the HDD volume is "NAME".
When I just restarted my computer, I got an error from Dropbox saying that my folder could not be found. I navigated to "NAME" using Finder and everything seemed to be in order. In Disk Utility, everything appears to be correctly in order and mounted. I looked at my symlinks (in my user folder) and they all appear to be broken.
I looked in /Volumes/ and it appears that my HDD partition has been renamed to "NAME 1", so that /Volumes/ contains both "NAME" and "NAME 1". The system requires me to use sudo to ls in "NAME", and it only appears to contain "sleepimage" (size of 8 GB, my normal amount of memory). I also noticed in Disk Utility that the Mount Point for "NAME" is given as "/Volumes/NAME 1"
I have no idea where this new "/Volumes/NAME" is physically, if it actually exists. It does not appear in Disk Utility. If I execute a "df" command, it does not appear in the listing. I am tempted to delete it in /Volumes/ and mv "NAME 1" to "NAME"
EDIT: Noticed this in the Console right before boot:
10-10-13 7:38:29.667 PM com.apple.mtmd: low disk space thinning needed for volume NAME (/Volumes/NAME 1) with 8.2 <= 10.0 pct free space , 1 snapshot can be thinned 10-10-13 7:38:29.668 PM com.apple.mtmd: attempting to thin because of low free space on NAME (/Volumes/NAME 1) by removing 2013-10-10 19:06:28 -0400, estimate 0 bytes to recover, 1 snapshot can be thinned
And this just after boot:
10-10-13 7:41:45.723 PM com.apple.mtmd: attempting to thin because of low free space on NAME (/Volumes/NAME 1) by removing 2013-10-10 19:34:46 -0400, estimate 0 bytes to recover, 1 snapshot can be thinned
sudo rm -rf "NAME"
did the trick!