Can confirm. You could also try checking if your drive controller mode is set to AHCI in the BIOS, as that's often required. Another option is to reconnect your main drive to a different SATA port on the motherboard.
This happened to me. For me, the fix was temporarily disconnecting all my non-essential USB devices, like external drives and my webcam, before starting the upgrade.
Agreed, that worked for me too. Also, try pausing any third-party antivirus software during the install—that can sometimes block it. Let me know if that works.
Can confirm. Agreed, that's a solid step. This might sound odd, but also try unplugging any non-essential USB devices like printers or external drives during the install.
This happened to me. I finally got past that error by temporarily disabling my antivirus and disconnecting from the internet for the actual installation.