It’s just ‘great’, you are relying on a well-known company selling Backup & Recovery software, Acronis GmbH. On their website they are promising potential customers that their Acronis True Image 2013 software is fully compatible with Windows 8, so you are buying or upgrading a previous version of the software in full faith and trust, assuming that Acronis will save you in case an disaster will happen with your PC and you will be able to boot from a recovery image in case of an disaster.
Well better forget efforts to restore the Acronis image, Acronis will let you down without mercy, your Windows 8 system will tell you: “Selected boot image did not authenticate. Press ‘Enter’ to continue”. So now you have a serious problem…
Cause of the failure message is Secure Boot, a Windows 8 Anti-Rootkit feature that will prevent the PC from booting an unrecognised operating system. Unpleasant side effect: it will also blocking Linux-based recovery environments, such as Acronis Start Up manager.
Despite the fact that Acronis is informed about the issue, they still sell Acronis True Image 2013 as being Windows 8 Compatible. I call this product sale scam. My advise to Windows 8 users: don’t buy the Acronis crap, on your Windows 8 PC it’s a useless piece of emergency software.