number of free blocks compared to when I run it as oot?
One of the details about the BSD Fast File System is that it sets aside some amount of the available disk space (if the file system was created by HD SC Setup, then 5% is set aside; if created by ‘newfs’ then 10% is set aside… this value can be changed by using the ‘tunefs’ command) and makes it unavailable to regular users. This prevents 2 things: filling up a file system and destroying performance by having a “too full” file system. ‘root’, however, does have access to this “extra” disk space, hence the difference in the numbers reported by df between ‘root’ and “regular joe”. As mentioned above, if you used HD Setup to create the partitions (or your A/UX came preinstalled), then the “set aside” value for these file systems is 5%, not the “default” of 10%… This was simply to give users more space. Reducing this value beyond 5% is Not A Good Idea.
