Installing W7 on an ssd without deleting previous install

Kind of a hard concept to impart in the title, but here's the gist of it:

I got an SSD for Christmas (), and plan to make it Windows' new home. I'm going to install the SSD, put Windows onto it, tell Windows (through the BIOS) to boot from the SSD over the drive that already has Windows installed, and then delete the previous Windows installation from there. So, I will be installing Windows on the SSD without first deleting the original Windows installation, and only getting rid of that installation once Windows is installed on the SSD. If that makes sense.

At least, that's the idea - computers being the way they are, I'm aware that if I carry through there may or may not be disastrous consequences during any one of those steps because of some unforeseen stipulation of SSD's or other hardware.

My question, then, is if there is anything I should know or otherwise do differently about reinstalling Windows in this way, without first deleting the other installation? Is there an easier way to accomplish this, or am I just plain doing it wrong? Please do not hesitate to point out the flaws in my plan. Thank you.

Edit: I just read that it's a good idea to keep the HDD unplugged while installing on the SSD, which makes a ton of sense. So, let me rephrase my question thusly: after installing on the SSD and plugging the HDD with Windows on it back in, will the two installations conflict with each other and cause problems (considering I have told Windows to boot from the SSD first)?

If you don`t have anything you want on the old HD you can leave it plugged in while you install to your new drive. Just delete all partitions when you start the new install. If you don`t delete the old, then you should have the option to pick either W7 install when done.

Personally, I would add the old HD later. That is, if you even need it.

Take a look at this Tutorial:
SSD - Install and Transfer the Operating System

Just make sure the SSD remains first to boot when replugging the HD after install. Then you can access its files from SSD and even boot HD when needed using the one-time BIOS Boot Menu key.

When ready delete Win7 on HD, to delete just its partition use Diskpart Delete Partition Override command (partition-specific) or to wipe the HD use Clean command.
Clean and Clean All with Diskpart Command

I hope this isn't a threadjack, but I have a very similar situation.

I'm building a whole new PC from scratch. The only thing coming over from this one is the (brand new) 1 TB HDD.

Can I install Win7 on the new SSD, in the new machine and then just move the old HDD drive over? This should retain all my data.

Can I then just point the Windows folders and libraries to the old HDD?

I realize I will still have to reinstall all the software, but I kept the install files on the old HDD. In fact, I might just download the most current versions of everything and then install them to the SSD from the HDD.

Thanks

I have surgically removed all of the Windows files from an OS before but it takes persistence and Take Ownership Shortcut.

Then you could indeed link the User folders to the old HD using this method: User Folders - Change Default Location

Better to move the data off and wipe the old HD as it could have code in the bootsector which can become corrupted and interfere even with all traces of Windows deleted off of it.

I regularly come across cases where a PC won't start until data HD is removed, and is only solved by wiping the HD which had corrupt code in bootsector blocking BIOS post.

gregrocker said:

I have surgically removed all of the Windows files from an OS before but it takes persistence and Take Ownership Shortcut.

Then you could indeed link the User folders to the old HD using this method: User Folders - Change Default Location

Better to move the data off and wipe the old HD as it could have code in the bootsector which can become corrupted and interfere even with all traces of Windows deleted off of it.

I regularly come across cases where a PC won't start until data HD is removed, and is only solved by wiping the HD which had corrupt code in bootsector blocking BIOS post.

Makes sense. Thanks.

This is why it's best to unplug all other HD's when installing.

Win7 also should be installed from booted DVD media so that it always is C when booted into it. You locked out C by installing from another OS if it was C.

Please post back a screenshot of your maximized Disk mgmt drive map with listings using the Snipping Tool in Start menu. Use Snipping Tool to capture screen shots

Tell us what is on each drive and how you want them to boot.