"not found" at bootup fixed

While working on Puppy2 I discovered a bug that affects any kernel that uses the old IDE drivers. This bug was reported by those testing the last alpha of Upup.

When booting with "pfix=ram", it stopped with a message that "upup-476.sfs could not be found". I found the cause in the 'init' script, where optical drives were assumed to be only of device /dev/sr* whereas with the retro kernel it could be /dev/hd*.

Tags: woof