The upgrade procedure creates a new
MODPARAMS.DAT for each system root on your system disk. Normally,
there is one root for each computer that boots from the system disk.
You must review and adjust each of these MODPARAMS.DAT files individually.
The MODPARAMS.DAT file for the system on which you are running
is located in the SYS$SYSTEM:MODPARAMS.DAT file. The MODPARAMS.DAT
files for other roots on the same system disk can be found in SYS$SYSDEVICE:[SYSx.SYSEXE]MODPARAMS.DAT, where x represents
the root number; for example, SYS0, SYS1, SYS2, and so forth. (Valid
root numbers might include hexadecimal digits -- SYSA, SYSB, and