This article is from a FAQ concerning SCO operating
systems. While some of the information may be applicable to any OS,
or any Unix or Linux OS, it may be specific to SCO Xenix, Open
This is an old article about SCO Unix and is only left here for historical purposes.
There is lots of Linux, Mac OS X and general Unix info elsewhere on
this site: Search this site is the best
way to find anything.
The simplest change to this is to edit /usr/lib/mkdev/fd
and increase the number of inodes created from the default. This
may cause problems, though, as HTFS inodes consume 128 bytes each
and a significant increase in the number of inodes would result in
a significant drop in the number of data blocks available on the
A better change would be to eliminate unnecessary device nodes
from your emergency floppy. Look for a line in
/usr/lib/mkdev/fd which sets a variable called NOTREQ
(which, roughly, is a list of device drivers not required on an
emergency diskette). Add to that list
merge mpm spm svdsp svkbd vdsp vkbd mouse
If you don't need pseudottys on your emergency diskettes, you might
also want to add spt mpt. There is also a bug in this
file; change the item ptspwr to pts pwr (by
adding a space), and you will cut out a few more unnecessary
When editing /usr/lib/mkdev/fd, you should actually make
a new copy (e.g. /usr/lib/mkdev/fd.new) and edit, and later
use, that rather than /usr/lib/mkdev/fd. Otherwise, you may
find your changes vanish at some time in the future.
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