What is the result when running fsck in single-user mode (boot with Command-s)?
Also, run the mount command after the fsck completes.
Do you have more than one user account on the computer?Yes, Daisy Disk is reporting 450GB of Trash.
Meanwhile, Sierra is reporting 0 bytes of Trash.
Working with Sierra is like working with some version 1.0 Beta OS
Do you have more than one user account on the computer?
Do you mean that you are not close to the computer to try?No access to system at the moment.
If above suggestion does not work, what else could I try?
Or, you can boot to an OS X system on an external drive. You should be able to browse to the internal drive and remove some files/folders that you don't need, but take up space.
Emptying the trash via terminal didn't work...or you didn't try?
I think that the root cause of this problem is some phantom Trash folder on the system which badly needs to be flushed out. Daisy Disk is reporting a 450GB Thrash for the only user.
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I do not have access to the system right now
Do you think a Terminal command like below will do the trick?
sudo rm -rf ~/.Trash/*
Have you deleted a file from an external drive or perhaps from Time Machine on external?
If yes, try ejecting the drive and see if the Trash is now empty.
Have you deleted a file from an external drive or perhaps from Time Machine on external?
If yes, try ejecting the drive and see if the Trash is now empty.