The Starter Systems

Disk Volume Structure - Starter II

Starter System II is used for the third step in the Migrate stage, and is also used for the first two steps in the Sysgen stage. DOSRES is the IPL'd sysres for these steps. At the end of the second step in the Sysgen stage, a new supervisor is cataloged and DOSRES is re-IPL'd. At that point, the Target system is being built.

DOSRES: DOS/360 system residence volume with System Core Image, Relocatable module, and source book libraries, a label cylinder, IPL bootstrap records, and the Distribution System supervisor (with all of its limitations).

SPOOL1: This volume contains private libraries that store relocatable modules and source books for the 1400 emulators available for DOS/360. Hercules does not support the 1400 emulator hardware features, which are required to use the 1400 emulation code. Saved for your reading enjoyment only. Once system generation is complete, this volume will be set up as spooling space containing the POWER queue and data files.

WRK14A: A work space volume for the processing partition. It includes compiler and link editor work files; work files for Disk and Tape sort overlay the compiler work files.

The 2311 volumes RES11A, RES11B, and RES11C are not used after the second step in the Migrate stage and are not shown here.

DOS Processing Partition

The Distribution System supported a single processing partition, and it did not have a name--it wasn't really necessary to name it because there was not a second processing partition, so no need to make a distinction.

The partition uses all available memory after the 6KB distribution system supervisor. On a real mainframe, the leftover could be as little as 10KB. On Hercules, you'll have nearly 2MB left over because the minimum Hercules emulated machine size is 2MB.

Finally, here's The Target System that is the result of all of this work.