Melted Drive From Columbia Shuttle Yields Data

Edwards had reason for pessimism. Not only were the drive's metal and plastic elements scorched, but the seal on the side that keeps out dirt and dust also had melted. That made the drive vulnerable to particles that can scratch the tiny materials embedded inside, destroying their ability to retain data in endless 0s or 1s, depending on their magnetic charge.

However, at the core of the drive, the spinning metal platters that actually store data were not warped. They had been gouged and pitted, but the 340-megabyte drive was only half full, and the damage happened where data had not yet been written.

Edwards attributes that to a lucky twist: The computer was running an ancient operating system, DOS, which does not scatter data all over drives as other approaches do.

After cleaning the platters with a chemical solution, Edwards used them in a newly built drive. The process -- two days from start to finish -- captured 99 percent of the drive's information.

Edwards was gratified.

And to drive home just what a long shot his recovery had been, he later had no success with two other drives found in Columbia's wreckage. Blasted by the unfathomable furnace of entry into the atmosphere, their metals had lost the ability to hold a magnetic charge.

Related Links:

Irene Klotz's blog: Space Diary

Kroll Ontrack Inc.

space shuttle Columbia

NASA's space shuttle page

How Stuff Works: How Hard Drives Work