Xerox 1186 User Manual page 63

SOFTWARE INSTALLATION
For exampie, suppose you had a file LRdesign. TEdit
on the subdirectory ParserGenerator on the
subdirectory Compiler on the directory (logical
volume) LispFiies of the rigid disk device. Its name
would be written as follows:
{DSK}..;: LispFiles>Compiler>ParserGenerator> LR
Design. TEdit.
If you don't explicitly put a directory in the file
name for {DSK}, the system will default to a
directory in a simple way. If the file does not have a
subdirectory and you omit the directory (logical
volume name), the directory defaults to the first
logical volume, after the volume that contains the
running virtual memory, that has a Lisp directory.
Thus if your disk has the logical volumes Lisp, rajo,
and LispFiles, and the Lisp volume contains the
running virtual memory, and only the LispFiles
volume has a Lisp directory on it, then
{DSK}lnit. Lisp refers to the fi Ie
{DSK}<LispFiles>lnit.Lisp. All the utility functions
presented above default logical volume names in a
similar way. An example of a utility function that
doesn't default directory names is
CREATEDSKDIRECTORY. If you want to find out
what the default Lisp directory is, call
(DIRECTORYNAME '{DSK})
This defaulting convention is necessitated by several
parts of the Interlisp system that create scratch files
on the device {DSK} without specifying a directory
(logical volume).
Disk Scavenging
The Koto release provides a disk scavenging service
to help you recover from the unlikely event of file
system failure. There are two classes of file system
failure: Lisp directory failure and lower-level, Pilot
operati ng system fail ure. Scavenging for Lisp
XEROX 1186 USER'S GUIDE
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