Dell Inspiron 15R 5521 :: Unable To Create Whole Disk Backup

I recently bought a new Inspiron 15R 5521 preinstalled with Windows 8and I have never powered it on because I want to make an entire disk backupas it is in a "pure" state.

I removed its harddrive (Western Digital, 1 TB) from my laptop to connectit to my desktop with 2 harddrives (one for system (Windows 7, 64 bit); the otherfor data (2 TB)), but never started the installed system to prevent the systemfrom writing some system information into the Inspiron disk.Instead I inserted a Windows PE CD embedded with Acronis True Image 2013.I chose "Disk Backup". The Inspiron harddrive had 6 partitions.The destination drive (where the image created was to be saved) was the 2-TB data disk.Clicked "Finish" and writing Partition 1...done, 2...ok, .... 6 ok and"Backup Process Failed!" at the final stage.

The final stage seems to be a partition layout.BTW the Acronis backup system has an option "Ignore Errors" (force complete).I gave it a try too, but the image created was incomplete with only 4 partitions.Macrium Rescue Disk is a similar one but with no ignore error option.I also tried this and failed at the final stage. No image created.The error message was "Unable to read from disk".Both the Inspiron disk and the destination drive happened to be Western Digital ones.I tried Western Digital Lifeguard checker on each and found no bad sectors.

Otherwise perhaps is that a trick or technology to lock disks?