I need to urgent help. Mac OS X just crashed while I was writing to my external hard drive; I rebooted my mac and the disk is now corrupted. My old partition is no longer mountable, nor can I fix it with Disk Utility. I get the following error when I try to verify/repair it: Verify and Repair volume disk1s2 Checking Journaled HFS Plus volume. Invalid node structure Invalid B-tree node size Invalid node structure Invalid B-tree node size Volume check failed. Error: Filesystem verify or repair failed. Screenshots: http://www.joaopinheiro.org/tmp/error2.png http://www.joaopinheiro.org/tmp/error1.png Can anyone please tell me what I might be able to repair the disk?