This is the ASDG recoverable ramdisk (also known as VD0:)

This is the latest version as of July 14, 1989.

New features are:
   * Upto 8Meg VD0:
   * ReWritten in Assembly (faster)
   * 1/3 the size (Used to be 6604

To use it read in instructions in the file 'mountlist' and
edit that file you reflect MAXIMUM size recoverable ramdisk
you want.  VD0: does NOT use all the ram you specfiy.  That
size specification just tells VD0: the most memory it is
allowed to use.  It is better to fill up VD0: then to run out
of memory.

To install VD0: you must add this 'mountlist' to the
'mountlist' in your devs: directory.  You can do this by going
to the CLI, setting the currect directory (CDing) to the
directory with the ASDG-VD0: files in it and typing.

   join devs:mountlist mountlist as RAM:mountlist
   copy ram:mountlist devs:mountlist

Then you must add the line

   mount VD0:

to your startup-sequence.  Mounting VD0: won't actually start
it up until you try to access VD0: so I usually put these two
lines in my startup-sequence

   mount VD0:
   cd VD0:

You also need to copy the file 'asdg.vdisk.device' to your
devs: directory.

   copy asdg.vdisk.device devs:

That should be all.  Just reboot.

Some tips:

  VD0: will work with RAD: (just mount RAD: first)  The
advantage to this is that IF you are using 1.3 KickStart you
can create a small RAD: (just large enough to hold what you
need to re-boot your system.)  And then you use VD0: for the
rest of your recoverable ram disk.  VD0: only uses the memory
it needs to unlike RAD: which uses all the memory you specify. 
This means you will have more memory free with this
arrangement then with just using RAD: and you will still be
able to BOOT from RAD:

  You can make VD0: "act as RAM:" by puting the following lines in your
startup-sequence

mount   VD0:
cd      VD0:
Relabel VD0: RAM
DiskChange VD0:

This way, all your programs that access RAM: will actually
access VD0:


Other Files include in the ZOO are

  SysMon        - Show you system performance information.
  DeleteRamDisk - After running this you will lose all the
                  information in VD0: next time you reboot.
                  (Similar to RemRad for RAD:)
  CleanRamDisk  - Tells VD0: to freeup any memory it is
                  no longer using.  (This happens
                  automatically every so often.)
  FastMem       - Allocates all your systems Fast Memory.
                  Run it again and it will release it.
                  (Used for very old programs that have a
                  problem with fast memory)