Accessing old C drive with new C drive installed.

[panxerox01]

I unhooked my old hard drive (partition c and d) and put in a new hard drive and operating system (win7 64). So with this new hard drive now labeled as C if I hook up my old hardrive (still functional)to retrieve data what drive letter will the old C drive show up as? will the computer still recognize it? and if so will the os assign a new drive letter to the old drive?

 

[R0GG]

Your computer will recognize your older drive and automatically assign it a new drive letter (depending on other DVD drives and USB readers you have attached to your system), it will be easily recognizable in windows explorer through it's name and capacity and files and folders available on the drive.
If your older drive still have windows on it your computer might boot from it ( and then the C drive you'll be seeing would be the old drive), thus the need to double check drive model and capacity and files to insure you're working on the right hard drive. If this happens you can configure your computer to boot the new system by choosing in the Bios the new hard drive as first boot option in the Boot Drive priority list.

 

[USAFRet]

I unhooked my old hard drive (partition c and d) and put in a new hard drive and operating system (win7 64). So with this new hard drive now labeled as C if I hook up my old hardrive (still functional)to retrieve data what drive letter will the old C drive show up as? will the computer still recognize it? and if so will the os assign a new drive letter to the old drive?

It will just get a different drive letter. D or E probably.
Assuming the system does not try to boot from it.

This is where a USB dock is handy.

 

[R_1]

okay. if the drive is installed it will be accessible.
The boot order in the BIOS will determine which drive gets booted and which drive get to be C:. the drive that boots will be C:.
the old drive in the new system may need to be imported as a foreign disk in the disk manager. once the disk is visible to windows it should show up as the D: and E: or two other letters in sequence.

right click on my computer and go to manage, in the window that opens click on disk management, which will open the disk manager console where you can import the disk. IF NEEDED.