The normal way to get the boot sound muted is if you mute your machine before restarting it. Is your sound muted on your laptop?
If it's not the sound level, reset the PRAM (which will reset the volume, but you'll be able to know if it's an actual issue or not).
Reboot your Mac
Hold down Command (Apple) + Option (Alt) + P + R
When you have heard the chime for the second time, release the keys and the Mac will boot as normal
Are you sure that the sound isn't just very low. I have my sound set to 2 bars and I can just barely hear the startup sound. This is under Snow Leopard. In the past Apple used to have the startup sound the same volume regardless of the volume you set your computer to but I'm glad that Apple has now made the startup sound adjust according to how loud we set the volume. I now always know when I left my volume too loud on shut down because the startup sound is very loud when I do so.nope .. i keep the sound always at 1
Yes, like I said Apple changed it. I much prefer it this way though.it was the volume .. weird it didnt do this pre-sl .. thanks