myhobby Posted January 14, 2023 Share Posted January 14, 2023 I trying to clone a perfectly working Big Sur installation on an EX58-UD5 mainboard. The current disk is APFS partitioned. Creating a clone with CCC/DiskDuper/Macrium all end with a copy that doesn't boot so I applied the opencore legacy patcher after disabling SIP via a separate MacBook. The MBR was written succesfully, but stil no boot via that disc. Reading the tool it was developed for a GPT partitioned disc. Is the APFS here the showstopper ? Anyone any idea what is the issue.... Link to comment Share on other sites More sharing options...
Slice Posted January 14, 2023 Share Posted January 14, 2023 We have too many ideas what is wrong. Link to comment Share on other sites More sharing options...
ndungu6678 Posted January 14, 2023 Share Posted January 14, 2023 (edited) 11 hours ago, myhobby said: I trying to clone a perfectly working Big Sur installation on an EX58-UD5 mainboard. The current disk is APFS partitioned. Creating a clone with CCC/DiskDuper/Macrium all end with a copy that doesn't boot so I applied the opencore legacy patcher after disabling SIP via a separate MacBook. The MBR was written succesfully, but stil no boot via that disc. Reading the tool it was developed for a GPT partitioned disc. Is the APFS here the showstopper ? Anyone any idea what is the issue.... Hello- I use both SuperDuper and Macrium Reflect to create fully working bootable clones without having to perform any further modifications-i stopped using CCC long ago because it started give me issues( which I guess are personal and not universal to others). What I find is Macrium has the ability to copy the EFI perfectly whereas with SuperDuper I find that occasiobnally, I have to update the EFI otherwise no boot-all this might be specific to my hack and cannot verify if this is related to your issue. All my disk are fully dedicated SSD for both BigSur and Ventura using the APFS file systems. Build 1: iMac20,2, i5-9400F, Samsung 16GB DDR4 RAM, MSI Z390 Gaming Plus, Radeon RX 580 8GB, OC 0.8.9 Edited January 15, 2023 by ndungu6678 Link to comment Share on other sites More sharing options...
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