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Opportunity to get a reboot

Because of an increasing number of computer resets on the Mars rover Opportunity, engineers plan to reformat the rover’s computer.

The resets, including a dozen this month, interfere with the rover’s planned science activities, even though recovery from each incident is completed within a day or two.

Flash memory retains data even when power is off. It is the type used for storing photos and songs on smart phones or digital cameras, among many other uses. Individual cells within a flash memory sector can wear out from repeated use. Reformatting clears the memory while identifying bad cells and flagging them to be avoided.

Obviously there is a risk, though small, that this action will not work and the mission will end here. Stay tuned.

Genesis cover

On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.

 

The print edition can be purchased at Amazon. from any other book seller, or direct from my ebook publisher, ebookit. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.


The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
 

"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News

2 comments

  • Pzatchok

    I don’t remember the other two rovers having this much trouble.

    Why would they change systems and major hardware for this rover when the old ones have proven effective and reliable for 5 to 10 years now?

    I have run systems for years without reformatting.

  • It appears you didn’t read the article. They describe how Spirit had exactly this problem and they solved it in this exact same way. Curiosity has also had computer problems that have been solved in a variety of similar ways.

    Also, they aren’t changing “systems” or “major hardware.” They are only doing a reformat of the rover’s flash memory. It carries risk, but this is software that can get corrupted over time. Reformatting can clean it up.

    Third, your comment makes it sound like you think we are discussing a new rover not yet on Mars. This is Opportunity, which was supposed to have a life span of only 90 days and has now been running on Mars for more than a decade. A reformat at this point seems quite reasonable to me.

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