Under the General Tab, make sure there is a check mark next to the Hard Disk.
If there wasn't one, put it in and the HD icon should appear on the desktop.
If there was one, and the HD icon is still not on the desktop, go to Your account, Library, Preferences and drag com.apple.finder.plist onto the desktop.
Restart the mac.
Did you get the HD icon back?
What you dragged out of the sidebar was an Alias of the HD. Dragging it, and any of the other icons you see there, just takes it out of the sidebar. Rather like dragging something off the dock. Just goes Poof.
Just purchased a 2.4 GHz 13" MacBook Pro running OS 10.6.4.
Had run a data migration from a 2.13 White Macbook running OS 10.6.4, and all went well, every thing transferred, all running fine.
Today, the hard drive icon suddenly vanished from the desk top.
I went to the Finder, under "Devices" saw the iDisk and Hard Drive icons and transferred the Hard Drive icon to the desktop...it vanished in a puff.
So, how much of an idiot am I, what is going on, and how do I get the Hard Drive Icon back?
I will leave this laptop running and in sleep until I log in and digest your wise suggestions.
Thank you in advance!