I'm using the Amazon Web Services emulator EC2 to run Windows server. I upgraded my instance type to the one with 4cores 16gb ram, and it worked well, but I need more storage to install visual studio. When I tried to upgrade to m5ad.xlarge to get the 150gb SSD, C: drive didn't expand like it was supposed to. I also tried adding a Volume, but that wouldn't work either. If anyone could give me a simple way or any external tutorials to complete this, that would be much appreciated, as the AWS Documentation solutions didn't work. Thanks!
Based on the comments, the issue was that the partition was not expanded. Following steps from the following AWS blog solved the problem: