Advise about two internal HDD

Nave03

Reputable
Jul 18, 2014
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4,530
Hello guys, i have two internal HDD both with an os install in it, im considering using just one for my os and the other for extra space can i do that and if so how do i erase the os installed on the other HDD.
 

Nave03

Reputable
Jul 18, 2014
36
0
4,530
no i don't get the menu for boot selection, it boot from the one i use first and i already arrange in bios to which HDD to boot first. i's just wondering how to use the second internal HDD so it's just another extra space. Should i just the two directly and keep the os installed in the other HDD or should i empty the extra HDD and then use it as an extra space HDD.