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You could use the Disk Utility to create a new APFS volume in your current APFS container. Next, download macOS Catalina from Apple App Store which will appear as the Install macOS Catalina application. Run this application and install Catalina in the new volume. Boot to the new volume and run the Migration Assistant application to transfer applications and ...
1
The error that your getting...
Exec format error
Is a response from the SATA controller (USB to SATA bridge) to diskutil that there was an error when you tried to format your drive. This points to a failing drive.
fsck is a utility to fix A corrupted file system and will not have sny effect here. Looking at it from a simplified perspective, in order for ...
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The type GUID for partition 2 of /dev/sda is wrong. The commands below will correct the problem. Enter the commands in an Ubuntu terminal window.
sudo gdisk /dev/sda
t
2
AF0A
w
y
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To add the space from the deleted container to the existing container, the deleted container would at least have to physically reside after the existing container. In your case, this probably was not true. You can confirm this by viewing the output from the command given below.
diskutil info disk0s3 | grep -e Size -e Offset
Here, I assume the existing ...
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I ended up verifying this scenario myself, you can restore a Time Machine backup from an SSD partition, onto another APFS partition that's on the same SSD drive
You need to enable booting from external drives on T2 Macbook's, but it's a simple step that you are guided into (Everything available on MacOS Recovery with CMD+R) (You need the root password of the ...
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Your guess is correct. The 2017 model Macs can only EFI boot Windows. Since the first partition on the external drive starts at sector 2, the drive does not have the space to convert from a MBR partition table scheme to a GUID partition table (GPT) scheme. This means you would need to restart the installation process.
When installing Windows 10, I would ...
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I end up copying the system over using the "Restore" function of Disk Utility, by connecting the serviced mac in Target Disk Mode to the other mac and restoring the macOS APFS container over to the Windows partition. This process is slower (300 MB/s) then the theoretical speed (1 GB/s) and it took twice as much time as I expect because there is a ...
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Just for the record. I've managed to increase the size of my APFS volume using GParted and Disk Utility (from macOS Catalina).
Create a GParted USB drive and boot from it
Use GParted to move the APFS partition/container around so that the free space appears directly AFTER the APFS partition.
Boot into Mac Recovery mode and open Disk Utility
Click the drop-...
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