Actually the windows 7 copy I own is fresh new (from Microsoft imagine) and not under use on any pc. So the procedure of cloning the system is needless in my occasion. In detail my steps will be:
1) buy an 120gb 2.5 hdd ~ 30$
2) internally connect the hdd with the mobo of my pc using a sata cable
3) install the os on the hdd (the os will recognize the hdd during the install process cause the hdd will be internally connected).
4) finalize the install process and complete any windows update task.
5) from now on the hdd contains the os.
6) remove the hdd from the pc
7) buy an hdd case (like this
https://www.transcend-info.com/Products/No-737 )
8) place the hdd inside the case (the hdd will be connected with the case using sata interface..... And the case will be able to connect with any pc using usb interface..... Like any hdd case).
9) change the boot order of the target pc-laptop (I mean the pc-laptop than I'm going to connect the hdd case in my vacation)
10) boot from the hdd case
English is not my first language, so sorry if you misunderstood my previous posts.