Comment passer du MAC OS X 10.7.5 à la version Yousemite?

Bonjour,
J'ai un Mac OS X version 10.7.5 et je voudrais passer à la version Yousemite. Seulement, quand je veux l'installer, il me dise que le disque dur à des erreurs irréparables. Comment faire ?
Merci d'avance.

It would be good if you indicated the exact model Macbook Pro that you have.
It sounds like your hard drive needs repair.
Boot into the recovery partition (COMMAND+R)
Select Disk Utility from the 4 option menu.
Run Disk Utility>First Aid, Verify and Repair.
If the hard drive cannot be repaired, a new one will have to be installed.
Ciao.

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Merci beaucoup pour cette aide.
Hélène Fallour
Le 28 juin 2014 à 12:23, TonyPT <[email protected]> a écrit :
Comment retrouver sur Mac la date de prise de vue d'une photo modifiée par Lightroom
created by TonyPT in Photoshop Lightroom - View the full discussion
S'il vous plaît voir ce post. Mais il est en anglais
.Keeping creation date when exporting to jpeg
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Edit

Comment passer du MAC OS X 10.7.5 à la version Yousemite?

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