> %PCSI-E-OPENOUT, error opening
>  DISK$AXPVMSSYS:[SYS0.SYSCOMMON.][SYSLIB]DECC$SHR.EXE_OLD; as output
> -RMS-F-FUL, device full (insufficient space for allocation)

> %PCSI-E-COPERR, error copying
>  DISK$AXPVMSSYS:[PCSI$UNDO_001.][SYSLIB]DECC$SHR.EXE;1 %PCSI-E-OPFAILED,
> operation failed

   Have you looked at your DECC$SHR.EXE?  Around here, it's really
pretty small:

ALP $ dire /date /size = all sys$library:DECC$SHR.EXE*

Directory SYS$COMMON:[SYSLIB]

DECC$SHR.EXE;1          5561/5568     30-SEP-2009 12:46:30.76

Total of 1 file, 5561/5568 blocks.

> [...] DECC$SHR.EXE is probably a contiguous file [...]

ALP $ dire /full sys$library:DECC$SHR.EXE
[...]
File attributes:    Allocation: 5568, Extend: 0, Global buffer count: 0
                    No version limit, Contiguous
[...]

   One could run a test using something like SYSGEN CREATE /CONTIGUOUS,
to see if there really is no useful contiguous space.  Or disable the
"_OLD" stuff when you do the installation.


> [...] VMS83A_UPDATE V15.0 [...]

   As a peon hobbyist, I have no access to the kit, so I can't try it
here, so I know nothing.