Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!uunet!pdn!tscs!tct!chip From: chip@tct.uucp (Chip Salzenberg) Newsgroups: comp.unix.i386 Subject: Re: Cannot umount /usr filesystem (ALWAYS "busy") Message-ID: <2678DD6F.31DB@tct.uucp> Date: 15 Jun 90 13:06:54 GMT References: <1990Jun13.184338.26482@pmafire.UUCP> <6324@uudell.dell.com> <1990Jun14.160156.7306@pmafire.UUCP> Distribution: usa Organization: ComDev/TCT, Sarasota, FL Lines: 16 According to rickf@pmafire.UUCP (rick furniss): >If I recall correctly Unix was originally written on a PDP7, then to PDP11, >[...] These machines hardly had what one would consider large hard >disks, and I believe still, /usr was part of root, the only partition. Sorry -- you didn't beat the reaper. The whole POINT of /usr/bin is that the root filesystem's /bin didn't have room for all the Unix binaries. Why else would there even BE a /usr/bin, /usr/include, /usr/lib, etc? The division between /bin and /usr/bin and between /lib and /usr/lib would not have been worth the trouble if everything fit in the root filesystem. AT&T Unix from V7 (at least) mounts /usr. Some others mount /u. -- Chip Salzenberg at ComDev/TCT ,