  OpenVMS Alpha upgrade? 
 The Question is:
 
We are upgrading from v6.1 to v7.2 for Y2K.
 
Will the Fortran programs currently running need to be recompiled for the
new version of the OS?
Current Fortran Licenses:
FORTRAN            DEC
FORTRAN-HPO        DEC
FORTRAN-IV         DEC
FORTRAN90          DEC
 
Also, is it possible to install 7.2 onto the following:
Volume label Free blocks	Free Space Total Space
"AXPVMSSYS"  416292		213 MB 	1.05GB
 
Thank you.
 
 The Answer is:
 
  There is generally no need to recompile or relink user-mode applications
  when performing an OpenVMS upgrade -- OpenVMS is quite compatible across
  software upgrades.  That said, recompilation with newer compilers can
  take advantage of improvements made to the compiler code generation, and
  can load newer object code if the applications are linked against
  OpenVMS object libraries.  (Most applications should link against the
  OpenVMS shareable images, very few should link against object libraries.)
 
  Code that uses privileged-mode (executive or kernel) routines or data
  structures may require changes and/or recompilation and relinking.
 
  Please see the OpenVMS Alpha Upgrade and Installation documentation
  for specific upgrade requirements -- from the experience of the OpenVMS
  Wizard, the current 1.05 GB (RZ26?) system disk will be tight.  The V7.2
  upgrade manual is presently available at:
 
    http://www.openvms.digital.com:8000/72final/6522/6522pro.html
 
  The V7.2 upgrade will require a maximum of 360,000 blocks free on the
  system disk, possibly less.  Please see:
 
    http://www.openvms.digital.com:8000/72final/6522/6522pro_006.html
      #overview_upgrade_chap
    http://www.openvms.digital.com:8000/72final/6522/6522pro_006.html
      #check_size_disk
 
  Please see the OpenVMS Frequently Asked Questions (FAQ) for pointers
  to Y2K readiness information and to the application and system Y2K
  testing procedures recommended by OpenVMS Engineering.  (The OpenVMS
  FAQ is accessable at the Ask The Wizard web page.)
 
  The OpenVMS Wizard would also recommend the release notes and new
  features manuals for V6.2 through V7.2, inclusive -- this will help
  you avoid various known and documented restrictions, and to take best
  advantage of new features and changes that have been made to OpenVMS.
 
  ECO kits are based on PCSI starting with OpenVMS Alpha V7.1-2 and later.
  Prior to this, VMSINSTAL ECO kits were used.  Do not attempt to use
  VMSINSTAL ECO kits on OpenVMS Alpha V7.1-2 or later.
 
