For users seeking a portable DMG file manager, we recommend:

: Acquiring a legitimate license for UltraDMG or similar software supports developers and ensures access to updates, support, and the use of secure, stable software.

: Cracked versions are frequently unstable, leading to corrupted bootable media that might fail during critical macOS reinstallation.

: There are several free and open-source tools available for disk imaging and data recovery (e.g., Clonezilla, TestDisk, and dd) that can fulfill similar needs without the cost or legal risks.