Windows 10: C drive got changed to D drive because of installing os in new ssd

It all started when my laptop started to restarting again and again when ever there a was lag. This happened for 2-3 days, and after that when i started my laptop, after scanning files and preparing for automatic repair, after some time a message was displayed that windows did not started properly, so i tried few solution to solve it such as setup repair or chkdsk for disk cleanup it got stuck at step 4 looking for bad cluster for almost 7 hours at 0%. So then after all this i went to a local vendor to repair this. And he added a new ssd and installed the os in it. That resolved the problem

:)

 

How can i change my new SSD into the C drive?

I recently bought a SSD for my computer and migrated the OS to it from the old HDD. I looked up how to change the letter for the drives as well but i can not seem to get the new SSD to be labeled as the C drive. I was wondering how do i make it so that
SSD becomes the C drive and the old HDD drive becomes the new D drive.

 

Installing Windows on my new C drive

Current Situation: My C Disk is cramming up and I decided to change a new C disk.

Currently my computer storage is composed of an SSD (being my C disk) and an HDD. I bought a new SSD and desire to somehow transfer my current system into the new SSD along with the current environmental variables, user data, both program files folder, and
various other folders instead of installing a brand new system on my new C drive.

Questions I am currently wondering:

1. I noticed the function provided by windows called "Create a system image". Currently my softwares are distributed evenly in my C drive (SSD) and D drive (HDD). I am not changing my HDD, so softwares installed there will not be removed. If I only choose
   to backup my system in my C drive, can I still run my softwares on my HDD after changing a C drive and reinstalling Windows using the generated ISO file?
2. Does this function "create a system image" pack up the environmental variables, registry, along with all other folders in my C drive, or only the minimal system?
3. If I extract the system image ISO into my new C drive, can I somehow "extract" from the ISO file to create a new system in my new drive? If not, is it possible to make my new C drive a windows Boot USB, and directly installing the windows system onto itself?
4. What is your suggested method of making this move?

Thank you for your help!!

 

Moving OS C drive to another SSD?

I currently have a 120GB SSD on my laptop as my OS C drive. I'm considering to install a new, larger SSD, but my Windows installation will be gone with the old SSD. So is there any way to move my Windows to a new drive?