First Class Peripherals Sider D4, Инструкция по установке и эксплуатации

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2 . B l o c k u s a g e b y f i l e s .
This mode tells you just what blocks on the disk are used by
each file. The printout gives the number of blocks in each
file (as in mode 1). Then comes the Index field. This con-
tains the number of the index block. This field is empty for
directory files and for seedling files (which have no index
block).
Next come the actual data blocks. If two numbers in this list
are separated by periods then they represent a range of
blocks all belonging to that file.
In case of a tree file (file length = $20000 = 131072) the first
entry in the Index column is the master key block and this
will be indicated by the text ‘ (Master index blockY next
to the block number. Following this, on subsequent lines,
are the index blocks pointed to by the master index block,
and their associated data blocks.,
The information provided by this mode can be invaluable if
you should ever have to attempt a repair by a disk zap
program.
3 . F i l e u s a g e b y b l o c k s .
This mode is the “reverse’ of mode 2. It shows which files
belong to the blocks on the disk. Most of the disk operations
are done prior to any printing, so be patient. The printout
consists of ranges of blocks in numerical order followed by
the file names (the full pathname less the volume name)
which use these blocks. This routine must build two large
tables and there may not be sufficient room to handle very
large volumes. In that case a partial table will be printed.
You can tell whether this happened by comparing the num-
ber of files with that given by one of the other modes.
4 . B i t m a p .
This mode prints the volume bit map. Used blocks are
shown with x’ and free ones with".". (You can change
these.)
Auxiliary PROGRAMS 8 7