Windows 10: How to install another os on the hard drive that already has a os installed

So i was planing to install another os to the same hard drive, where the os is already installed on it, but i don't know how to. Please tell me how to do it!

:)

 

Hard drive/ OS issue

a guy suggested :

• shutdown
• unhooked HDD
• restarted
• yay !!
• reconnected HDD
• restarted
• yay !!

also , try method 3
Drive Where Windows is Installed is Locked: How to Unlock It

 

Laptop hard drive won't let me install OS

OK I fixed the MBR and now am installing OS, I split the 120GB into a 50 & a 60 and ran installed the OS to the 50GB.

it just stopped @ atiixpag.inf and retry doesn't do nothing.

Any suggestions ?

 

installing OS X86 on seperate hard drive

hey everyone
im trying to install ideneb V1.4 of OS X 10.5.5 on a spare hard drive

i was able to install the o/s just fine, but when i boot normally all i get is apple logo and a spinning wheel...i've waited over 2 hours and it just keep spinning

i tried booting with -v -f and -v -x and it goes through all the drivers, but it freezes when it gets to my motherboard(same mobo as in system specs)
right now i'm downloading kalsay OS X 10.5.2 and i am going to try to install that on a virtual drive and see if that works


any help would be greatly appreciated!