A reader drew our attention to a problem that he met on his Macbook pro 2009 equipped with a 500 GB hard drive running at 7200 rpm. This disk regularly ceases functioning (10 to 15 times per day), causing the appearance of the multicoloured wheel, and emits what one can qualify as a beep. A video posted on Youtube allows us to hear it (around the fourth second, it is not loud).
After digging a bit on the Web, one finds that he is not the only one to encounter this problem which seems related to the disk (made by Seagate), since
