During which stage of the boot process would this message be seen?
ide_setup: hdc=ide-scsi

A.
Daemon initialization and setup.

B.
Boot loader start and hand off to kernel.

C.
Hardware initializiation and setup.

D.
Kernel loading.

Explanation:
See http://www.learninglinuxkernel.com/Linux_Boot_Process.html
In the Kernel-Loading phase it re-initializes parallel ports, serial ports and all the on-board controllers
like USB, IDE, SCSI, Serial, parallel, timers, RTC etc. These startup drivers are also called BSP drivers
or Board Support Drivers.