Make sure to have a valid channel backup and seed words before proceeding!
Plenty of guides out there.
https://community.umbrel.com/t/cloning-migrating-ssd-hdd-on-macos/15489
https://community.umbrel.com/t/guide-cloning-or-migrating-ssd-hdd-windows/2509
https://blog.jamestsetsekas.com/posts/umbrel_ssd_migration/