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From: glee@athena.mit.edu (Gilbert Huppert)
Newsgroups: comp.sys.mips
Subject: Miscellaneous questions
Keywords: Diskspace, newfs.ffs, mount
Message-ID: <1991Jan7.160027.5883@athena.mit.edu>
Date: 7 Jan 91 16:00:27 GMT
Sender: news@athena.mit.edu (News system)
Organization: Massachusetts Institute of Technology
Lines: 30

I have a few questions which came up last night when I was installing
a new Wren-7 drive from Seagate (1200 Mb).  I know that the formatted 
capacity should be 1039+ Mb, and this is what the partition table claims
is available.  However, when I run newfs.ffs to set up the disk header,
I find that I have only 985+ Mb.  There is also the problem that the 
system automatically saves 10% of the diskspace for file overruns to try
to minimize crashes due to out of disk space for open files.  While this
may be all right for small disks, I really have no need to save 98 Mb for this
purpose since this disk is only being used as remote file space for PC's.

Question #1:  How do I access the full potential of the disk?

Question #2:  Is there anyway the minimize the reserved disk overhead?

At the same time, I rearranged some of my filesystems into a more logical 
order in order to remove conflicts when one filesystem is not already 
mounted.  This left me with one partition of one disk (sdc0d0s7) on an 
RC2030 which will not mount.  I always receive the "Device or resource busy"
message.  I know that the partition is not mounted anywhere, and the directory
I am trying to mount is not busy.  This leads to :

Question #3:  Any ideas why I might not be able to mount a free filesystem?

Replies are greatly appreciated.

	Gil Huppert

P.S.  I am currently running OS4.01 and OS4.10 on my machines since I have
not received all the update tapes.  To install the 1.2 Gb drive I used a
4.51 miniroot since 4.01 does not recognize this drive.