If the OS is not running at all, how do you use Systemback to effect a full recovery?

To avoid pulling 'off-topic' the thread were you gave this advice, could you please reply here? It will give your answer a proper Subject heading, as well, so other Systemback users will be able to find it, if they have need to revive a 'dead' system.

You wrote:
"If [the operating] system is not running at all (even the recovery mode either), just boot a compatible Live system (or other seperated system), mount the partitions and _perform a system repair._"

Am I correct that the last item actually involves multiple steps?

For future reference, I want to make sure I understand what's involved when you say, 'perform a system repair', so could you ...

Please tell me if the following assumptions are correct:
To "perform a system repair" when using a separate operating system, 'Live' or otherwise, would you have to:
1) install Systemback in the separate operating system and run Systemback from inside that system,
2) point the 'Storage directory' field to whatever location was originally used,
3) see the Restore Points appearing in that same 'window',
4) go directly to the Systemback window titled 'System repair',
5) select one of the repair options, either (??) System Files Repair or Full Repair,
6) then 'Next' -- and the job is done.

Or, is there some shortcut that would directly use Systemback's restore point files, without running the utility, that would 'perform a system repair'? Or, is there some way of running Systemback as it already exists, in the damaged operating system? I am not 100% clear on these points.

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If the steps 1) through 6) are complete and correct, just saying 'OK' would be fine! Or, if the Systemback CLI has to run, instead, that information would be most helpful.
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