I appreciate any method that will work for my situation.
I have a 500 GB SSD drive with my operating system installed on it, which I have been using for years. I bought another 500 GB SSD for the sake of backing up the first one.
What I have tried:
I went into my BIOS, changed to RAID mode, and tried to create a RAID1 for the drives. It warned me it would wipe both drive, which I dont want, so I cancelled.
I went to the disk manager, I right clicked my new disk, and "Create mirrored volume" was grayed out. I googled and eventually discovered that for whatever absurd reason, there is instead an "Add mirror" option from the source drive. Which was also grayed out. I continued to google and found that both drives must be dynamic, and that the destination drive must be unallocated. This made the option available.
I clicked "Add mirror" to my main drive to copy it to my new drive, and it failed. It says "All disks holding extents for a given volume must have the same sector size, and the sector size must be valid."
I have no idea what a sector size is, or how to check it, or how to change it, and googling has led me nowhere.
I just want to backup this drive.