Could anyone help me, step by step how to do a full optimisation on boot? I use 5.1.2 version. I have 64 bit Windows 7 Home Premium.
Did you read the manual section about boot time defragmentation?
What was not clear?
Did you see the reference to the console interface for a detailed description of the switches for the udefrag command?
I did read, then tried to open ud-boot-time.cmd in system32, but it opens and closes immediately. I do not know what to do.
Did you open it for editing or just double-clicked it?
Double-clicking will execute it, since it is an executable batch script.
You would have to use "Edit" from the Explorer context menu to alter its contents.
I opened it and then what? As far as I understand the program can full optimize on boot which needs "-o" command, how do I enable that? It can not be just entering "-o" and solve my problem.
Find the line containing only udefrag and change it to udefrag -o.
That is all.