Access data on hdd without messing up the pc autonomy how ?

HI

on my new ssd 500gb i currently have win 10 . I ll install linux on it on dual boot.

i still have my old hhd 1 tera containing the win7 i was using and there are
other partitions on the hdd containing music movies txt etc.
I do need to have acces to those video music data and they are too voluminous to enter the ssd.


i would like to keep the win7 functionning if i have prob with the dual boot but the question is if i plug this hdd plus the ssd,
will the pc be confused ? (cause it contains a win7 wanting to start)