At the terminal prompt, type: sudo cat /dev/rdisk0> /dev/nullNote: There is a space AFTER “sudo,” “cat,” and the “>” sign.Open Applications > Utilities > Terminal.Log into your computer as an administrator.From those questions, Robert put together the Q&A below. When Bob first sent me the procedure, I asked him to please double-check that this is safe, find out how long a scan takes, and tell me how to escape out of it. Feel free to share this with your friends. Thanks to Robert Gobeille, I now have a solution and an explanation. What I didn’t know was how to do a refresh… until recently. But that only happens when the hard drive is powered up and operational - something not possible when it is sitting on a shelf. (I’ve been told the term for this data loss is “bit flux.”) This data can start to disappear as early as a year after the hard disk is powered off.Īs you can imagine, this caused quite a stir.Īfter talking with a lot of hard disk folks, I learned that the easiest solution is to refresh the data on the hard disk before it starts to “fade.” All hard drives are programmed to refresh data as the heads skim along the drive. The basic problem is that magnetic data stored on the drive fades, or loses it charge, over time causing you to lose all the data on that hard disk. Two issues ago, I reported that when a hard disk is powered down and stored on the shelf, after time the magnetic data will tend to slowly “evaporate.” (Here’s the original article.) [ This article was first published in the November, 2008, issue of
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |