Configuring 2 HDD's for dual boot

OK so i have 2 HDD's in my PC. Hdd A has windows on it. Hdd B has linux on it. Both operating systems were installed separately. By that i mean i installed windows when linux hdd wasn't connected to pc, and i installed linux when windows hdd wasn't connected to pc.
So here is question. Can i 100% SAFELY plug in both drives(and have dualboot), without ruining win boot loader or something. Because i have a lot of programs installed and would be pain in the ass to install everything again. (BTW important data is all packed up on third hdd xD )
Thank you for help :D
elej

Yes you can, there'll be no problem. You'll most likely need to update the boot entries since you mentioned neither of the other hard drive was installed at the time the other was installed. Now after you do this you just select one of your hard drives in the bios (preferably the Linux one as it'll be easier) and then at boot time there'll be a menu (such as GRUB) to select which OS you want to boot into

sudo update-grub
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I'm writing from my linux installation. Everything works ok. :D (i didn't configure grub because pressing f12 and then choosing other hard drive works ok for me)
Thanks for help

You're welcome. I recommend just updating your grub and keeping your linux drive selected, sounds easier then your method :p

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