Where did my free space go?
- by Ari B. Friedman
I have a storage drive (2TB) and an OS drive (90GB SSD). I've run out of space on the OS drive:
/$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sdb1 72G 72G 0 100% /
udev 5.9G 12K 5.9G 1% /dev
tmpfs 2.4G 1.2M 2.4G 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 5.9G 428K 5.9G 1% /run/shm
/dev/sda1 1.9T 639G 1.2T 37% /media/StorageDrive
So be it. But when I attempt to figure out where the space has gone, I cannot find it anything remotely approaching the capacity of the drive:
/$ sudo du -h -d 1
du: cannot access `./media/StorageDrive/home/ari/.gvfs': Permission denied
675G ./media
2.3G ./var
0 ./proc
7.0M ./tmp
27M ./boot
4.0K ./lib64
12K ./dev
44M ./home
16K ./lost+found
8.0M ./sbin
223M ./lib
4.0K ./selinux
1.4M ./run
140K ./root
8.8M ./bin
4.0K ./mnt
38M ./etc
8.0K ./srv
4.8G ./usr
65M ./opt
0 ./sys
682G .
Note the difference between the total (682G) and the mounted drives in /media (675G) is only about 9G. How are 72G being used? Where is this dark matter hiding?
