Solution to invalid parameter or information code 4120 occurring when you clone from a large drive to a smaller drive with AOMEI Backupper.
This article applies to: AOMEI Backupper all versions.
Sometimes, when you clone from a large drive to a smaller drive, you may encounter error code 4120:
Clone is initializing...
Checking volumes...
System cloning...
Information Code: 4120
Failed to adjust partition size.
Method 1: Delete all partitions on target drive and clone again
Press Windows + X and select Disk Management. Right-click on each partition on the target drive and select Delete Volume.
After the target drive shows unallocated space, open AOMEI Backupper and try disk clone again.
Method 2: Edit the partition size manually
Before starting clone, click Edit Partitions > Manually adjust partition size to edit the size of each partition manually.
If there is still any problem, please feel free to contact us.