It's in the FAQ, specifically http://www.openbsd.org/faq/faq14.html#NegSpace
John Kintaro Tate wrote:
Hrm, I was installing the mono port and I ran into an error. The error was simple and we all know what it means. Trying 62.243.72.50... Unimplemented command. 61% |****************************** | 8922 KB 04:55 ETA /: write failed, file system is full So I did the next thing that comes naturally, I aborted and did a df -h... # df -h Filesystem Size Used Avail Capacity Mounted on /dev/wd0a 787M 778M -30.6M 104% / WTF is going on here? -30.6M sounds kinda weird.