if you are upgrading to 8g it may not work. my system would only recognize a mismatched 4g and 2g for 6g. even the 2g boost from 4g made some speed improvement
on my install i had to initialize the drive in a ext case on another system. if you are going to install new os from a usb (ubuntu, osx) almost any format will do that assigns partition and a system type. then the system will recognize that the drive is there and permit loading of a system. that may work with a recovery drive as well. after the quick format i tested both my osx and my ubuntu usb loaders. system found both of them.
Lorsqu'il en aura reçu, il pourra afficher un graphique de sa réputation au fil du temps.
Voici un aperçu de ce à quoi ressemble ce graphique :
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