It has always been my belief, well borne out in practice, that Happy Mac's significance is that Start Manager has found the boot blocks on a startup volume (and that a SCSI device driver is loading, if that is the case). Silverlining corroborates this latter with its own splash screen.
That's all. If those boot blocks point to no valid System Folder, or a corrupt System Folder, that fourth signpost (chime, raster, pointer, HM) is the end of the startup process. Never mind splash screen, mouse tracking, desktop or other comforting signs of normality.
MacWEEK's Upgrading and Repairing Your Mac, Lisa Lee, 1995, goes into some detail about the Startup sequence and the alternative Stopup sequence. As a digest of the process it is a handy reference.
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That's all. If those boot blocks point to no valid System Folder, or a corrupt System Folder, that fourth signpost (chime, raster, pointer, HM) is the end of the startup process. Never mind splash screen, mouse tracking, desktop or other comforting signs of normality.
MacWEEK's Upgrading and Repairing Your Mac, Lisa Lee, 1995, goes into some detail about the Startup sequence and the alternative Stopup sequence. As a digest of the process it is a handy reference.
de