I copied an entire SATA HDD (sector by sector) onto a new SATA HDD which has the same size. On my new HDD, I found all partitions (OS, Diags, Recovery, ESP) and files, but my computer (DELL) using UEFI refuses to boot on the new HDD.
The only way I have to reach the new HDD is to set it on another SATA port and boot with the old HDD as the primary drive. From there, I tried to use explanations found here but I'm not familiar with these commands and I'm afraid to reach the old HDD. I'm preparing a USB flash to boot WINRE with only the new HDD connected. If you have any ideas or tips to help, that would be greatly appreciated.