i do a backup of my stuff manually each month via an ext. HD.
right now, i was backing up my AppData folder (so much is in there!).
being anal, i compared the size of my laptop's internal HD compared to the ext drive when it was done.
results:
internal: 5+ BG
ext. 2+ GB
so i compared the...
appdata
backup
data management
disk space
external drive
file comparison
file system
folder size
hidden files
internal drive
storagediscrepancy
windows