Invalid node structure
Don’t you just love it when you plug in a DVI to RCA adapter to watch some movies with Front Row, and your system crashes and totally dies? Yeah, that’s awesome. Then that silly Apple Disc Utility keeps producing an “Invalid node structure,” no matter how many times you run it. Ahh, fun.
Anyhow, I was able to boot to single user mode, mount the disk, run an fsck -fy; even though it spat out the very same error, it came back up. Is it a drive hardware issue? Bad sectors? Low level file system corruption? Guess having a journaled FS doesn’t mean a whole lot these days. Perhaps I just need to sacrifice more baby goats to the hard drive gods.
P.S. Big ups to Jesse the ex-Genius for walking my lame ass through a dead Mac. Hopefully by morning I’ll at least be partly back up and running.
Co-founder of


Is it superlame to be the first comment in a post mentioning yourself? Anyhow, new URL baby! osakasteve.com is where all the cool kids aren’t hanging out these days.
Fixed!
Welcome to new URL territory. It’s all going down at osakasteve.com these days son!
Hi Ryan,
I found this post when googling “Invalid Node Structure”… which is something I have been blessed with today, according to Disk Utility. I was just wondering if it was related to your hardware or if it was just a file structure error.
I’m about to create a bootable TechTool Deluxe disc, apparently the disk image is downloadable once you’ve signed up for AppleCare (just got a new MBP). Hoping this fixes it.
Sucks man, sorry to hear it. I discovered the hard way that my company-issued MBP didn’t use Journaled HFS — so when my machine crashed it took out my file system. I suggest formatting with journaled HFS (which shouldn’t have that problem). In the end, though, I had to run tons of diags and disk checks, copy all my data off (image it if you still can), reformat and start again. Good luck!