Running windows Me on two hard drives in one computer

[windmeuser]

Hi
My sister in law is running out of hard drive in her Dell with windows Me and a 60 GB hard drive as the C:/drive.
She has ordered a 120 GB hard drive.But she wants me to make her new drive the C:/drive and move the old 60GB drive into the D:/drive.
My question is will after formating the new drive and installing the Dell Windows Me on it will she be able to get the Windows Me on the old drive to open? Well it be as simple as going into My Computer and clicking the D:/drive listed in there?
She thinks she can have me do it this way and then take her data from the D:/ drive and take back to the new C:/ drive but I'm not sure it well be that easy and don't want to lose her data on her.
I thought she should have me put the new drive in as the D:/ drive and put all her importent data on it then if she wants she can rerun in her Dell Windows Me on the C:/ drive.But If its possible to run Windows on each drive I would do it for her.I'm [e-mail]

[txbakers]

My advice would be to keep the 60 GB drive as the system drive with the OS and required files. Keep the new 120 GB drive as the data drive and store programs, etc. on it.

If you try to make the new drive the system drive, you will probably have to reinstall all your software and start with a clean install, wiping the OS and files from the old drive.

[DaveAtIFG]

Another option is to use Norton/Symantec Ghost or a similar utility to clone the old drive onto the new drive. These utilities format and adjust partition sizes automatically during the copy process.

After copying, bring the system up on the new drive installed as the C: drive to confirm it. When satisfied, add the old drive as the D: drive, format it and start storing data.

I agree with txbakers suggestion assuming the performance of the drives is similar. However, newer or larger drives are often substantially quicker and you'll get best performance when the op system is on the fastest drive in your machine.