Hello everyone, I'm fairly new to Mac, but experienced windows and linux user. I have a MacBook Pro 15" Unibody with a 320GB hard drive. Disk Utility shows: Capacity: 297.6 GB (319,594,762,240 Bytes) Available: 121.2 GB (130,086,342,656 Bytes) Used: 78.7 GB (84, 527,804,416 Bytes) I'm missing 97.7 GB. Interestingly enough, running 'df -h' at a terminal reports: Filesystem Size Used Avail Capacity Mounted on /dev/disk0s2 200Gi 78Gi 121Gi 40% / Also I found in some other posts that running Disk Inventory X may help find where disk space is going.. so I downloaded that and it shows my Capacity is 199.9GB. Anyone have ideas as to why this is? Thanks.