I have a 27in late 2012 iMac that I'm trying to clone it's 1TB HDD to a 1TB samsung QVO. When I had high sierra, I was able to do this without issue in the Disk Utility. I upgraded to Mojave (10.14.6), and am trying to set it up to clone again so I can dedicate the external SSD as the new boot drive. I cannot do it within Disk Utility, and two issues occur or keep occurring:
1) For some strange reason, the SSD's formatted size somehow got smaller than the HDD by like 100MB, and the clone operation wouldn't even begin. I had to create a 5GB partition to the main HDD to be secure it wouldn't do this again, and it at least would let me start the process.
2) When running the clone operation, it starts, but then after 2-3 hours and nearing the end will stop and provide an error: "You can't change the startup disk to the selected disk. Running bless to place boot files failed."
Is there an easy solution to this? I'm not super comfortable in terminal or complex workarounds, so I'd prefer simplicity if it exists and someone is familiar with this error. Would upgrading to catalina, big sur or monterey fix this? I'm open to all answers ultimately too, thx!
1) For some strange reason, the SSD's formatted size somehow got smaller than the HDD by like 100MB, and the clone operation wouldn't even begin. I had to create a 5GB partition to the main HDD to be secure it wouldn't do this again, and it at least would let me start the process.
2) When running the clone operation, it starts, but then after 2-3 hours and nearing the end will stop and provide an error: "You can't change the startup disk to the selected disk. Running bless to place boot files failed."
Is there an easy solution to this? I'm not super comfortable in terminal or complex workarounds, so I'd prefer simplicity if it exists and someone is familiar with this error. Would upgrading to catalina, big sur or monterey fix this? I'm open to all answers ultimately too, thx!