Hi, I have a Lenovo ThinkCentre M90p with openSUSE Tumbleweed installed. The machine has Legacy BIOS and no UEFI capability. I decided to physically transfer the HDD to a HP Pavilion 500-010xt desktop which appears to have Legacy and UEFI BIOS boot capability (as per BIOS options). I Attempted to manually select boot device at powerup by pressing f9 and selecting Legacy Boot Source > Hard Drive SATA0 resulting in message 'Error: No boot disk has been detected or the disk has failed'. I have entered the 'BIOS Setup' and disabled, tried to boot, failed, then reenabled UEFI Boot Sources also. I can boot the operating system with the use of System Rescue CD USB medium. I have then tried using YaST2 bootloader to adjust the menu timeout, saved, powercycled with no luck. Also I have attempted to use the openSUSE Rescue CD and perform a chroot. Once chrooted, I have tried passing 'update-bootloader --reinit' and also grub2-install with both /dev/sda and /dev/sda2 (/boot partition) both giving me a 'No EFI Partition found' message. Could you tell me what to look into further on how to proceed with this problem of booting the operating system? -Regards