My new hard disk arrived today. With hub's help, I got it installed. Fortunately, I found my original Snow Leopard disk and started to prepare the new disk. I couldn't manage to get it restore from my latest backup on my Cloud storage (couldn't connect) but luckily had an old backup from an EHD so I used that. As I'm writing, it's now restoring from my backup and will take 3 hrs approximately. Fingers crossed that I get my stuff back. My main concern is the photos in iPhoto as I've not transferred two and a half years worth of photos onto an external hard disk! I'm so gonna dedicate a day in every week to backup everything! Never know when your hard disk will suddenly fail on you! TTFN!