Requirements
• A local admin password for the Mac computer to be imaged.
• LLIMAGER must have “Full Disk Access” permission (set this in: Settings > Privacy & Security > Full Disk Access).
• LLIMAGER USB disk: Containing a copy of the imager executable “llimager.app” and the required license file (llimager.lic).
• Temporary Image USB disk (if used): Since LLIMAGER creates a temporary sparse Image, the optimal method of acquisition is to have a holding disk for it. The disk can either be the LLIMAGER USB or another dedicated USB drive. In both cases, enough free space is required, which should be equivalent to the total used space plus 10% or larger.
• Destination USB disk: external disks formatted with exFAT are recommended to be used as the destination of the disk image (for compatibility between Operating Systems). Of course, any Mac writeable partition format will work.
* The USB disk should have free space equal to or greater than twice the size of the source device’s used space plus 10%. If a separate Temporary Image USB disk is used, each should have free space equal to at least the size of the used space plus 10% of the source device. Use these guides as a rule:
### Storage Requirements Reference Table
| Source Disk Size | Source Space Used | Min. Size (Single Disk) | Min. Size (Dual Disks) |
|---|---|---|---|
| 500 GB | 50 GB | 110 GB | 55 GB / 55 GB |
| 500 GB | 400 GB | 880 GB | 440 GB / 440 GB |
| 2 TB | 120 GB | 264 GB | 132 GB / 132 GB |
- The best practice with respect to optimal performance is to use two USB disks, one for the sparse image, and one for the final converted DMG. This will significantly reduce the time to convert the sparse image to the DMG file.
- When using two USB disks, each must have a unique name.