Error messages during booting process?

[yellowdog.z.furball@spamgourmet.com]

During the booting process on my G3 Yosemite running YDL 3.0, I often
see the following messages, sometimes repeatedly, usually randomly.  Are
they something I should be concerned about?

hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hda: dma_intr: error=0x84 { DriveStatusError BadCRC }