I’ve been getting a lot of comments that say “invalid BS_jmpBoot in boot block: 000000” happens with Apple’s Boot Camp HFS drivers from Snow Leopard as well as MacDrive. The act of assigning a drive letter to the partition seems to cause the GPT corruption. This would seem to make it a Windows issue. I do not speak for my employer in any official capacity, but when my current high-priority tasks are done, I’ll ask around at work and see if anybody knows anything about this issue.
Meanwhile, keep sending in your experience reports! The more data, the better.
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update: Comments have been turned off for this post; all questions, comments, suggestions, and support requests about gpt-surgeon must be submitted through the gpt-surgeon LaunchPad site and should be accompanied with disktype reports.
Bat Country 
Hi man.
My iPod has died and I´ve try to put the disk into a external box to make it an USB disk.
It works but… I found this message when the system access the disk.
Do you know how to read the “iPod format”?? I know the disk is perfectly well and an iPod can read it…
Do you know anything about this??
Thanks a lot.