Depending on your internet connection it might take several hours to download and install 5.5 GB. After some verification steps you will be asked to choose a partition for the new system. Choose Mac OS Extended (Journaled) and GUID partition table (available with the option button). In the opening window choose Disk Utility and format/partition the drive you want to install the system to.(Additionally you might need an external drive or a thumb drive with at least 32 GB if you want to install to an external disk.) On a 50 Mbps-line it takes about 4 min (presenting a small animated globe) to boot into the recovery netboot image which is loaded from an apple server. The prerequisites for an internet recovery are listed here: supported Pre Lion Macs and Recovery/Internet Recovery.In a few words you need the latest firmware update installed, either ethernet or WLAN (WPA/WPA2) and a router with DHCP activated for a successful internet recovery. Since your recovery volume is probably corrupted, you have to initiate an internet recovery by restarting your mac and pressing alt cmd R.Do a PRAM-reset (Apple Support: de_DEen_US). Do a SMC-reset (Apple Support: de-DEen-US).Please check your hardware with your original system DVD (Apple Support: de_DEen_US) or if the DVD is not available with the appropriate Apple Hardware Test image.Probably it's faster to just backup/copy your or all user folder(s) to an external drive. Backup any additional files which aren't already in your SuperDuper! image.
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