Thomas Fuchs
Hi, I'm Thomas Fuchs. I'm the author of Zepto.js, of, and I'm a Ruby on Rails core alumnus. With Amy Hoy I'm building cheerful software, like Freckle Time Tracking and Every Time Zone and write books like
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Offtopic: How to fix an unmountable external harddisk in Mac OS X

April 15th, 2005

So, I got this external drive which was not mountable anymore. The system log complained about a corrupted disk journal. Fire up Google and find this nice little article, which will give you your drive back (and you don’t have to buy expensive bloated disk utilities)—try mounting it writable, then ejecting via the OS X Disk Utility, unplug firewire cable and plug in again.

This should do it. Of course, if you’re not the adventurous type, try mounting it readonly and backup your data somewhere first. Thanks a lot, Christian Fries, this saved me one or two headaches.

UPDATE: I had this problem now once with 10.4 Tiger, and the Disk Utility repaired everything for me—no need to hack around in the Terminal anymore.