Ladies and Gentlemen.
I'm glad to tell you, that Lenovo made new backup&restore system, called OKR 6.
It consists of tow parts - One Key Rescue and One Key Recovery.
Rescue system is that part that is loaded when you turn on your computer by NOVO key. It now includes bottsector-protective-antivirus, ability to restore Windows kernel files not using an image (that means no disc C formatting).
One key recovery is Windows installeable program, that allows you to burn recovery disks. Every disk is bootable and is based on WinPE. All you need to restore a system issuch a disc - you boot from it and restore an image that is burned on it.
Only system partition is allowed to be backuped. Two packing methods are allowed - quick and maximum. Tests were performed on Lenovo G410 Celeron 1.86, 3 GB RAM, no swapfile. Appliable for Y410/Y510/Y710/U110 for sure - these models have same recovery system version, others model are unknown.
Test was performed on system partition - 14 GB out of 30 were filled.
Quick compression resulted 4,8 GB and took 36 minutes 49 seconds.
Full compression resulted 3,5 GB and took 38 minutes 32 seconds.
Restore time was counted since the moment of computer turning on - that means power button pushed, WinPE booted, Image to restore was choosed and restore performed. Time that was needed to change DVDs in multy-disks configuration (Quick compression results were burned onto 2 DVDs) was also counted.
Quick compression image took 17 minutes, full compression image took 13 minutes.
It's obvious that full compression is preferrable.
Here you can get some usefull info on how to reduce your disk C size and how to keep important data safe within this system.
Highly recommended to read.
Thanks for atttention.
//help will save the world