These archives compress a full 4.7 GB DVD down to a few hundred megabytes.
Older versions of Windows software frequently struggled to interpret the Apple Partition Map (APM) required for PowerPC and early Intel Macs to boot from an optical drive. TransMac 8.1 introduced specific stability updates to resolve how sector-by-sector disk image writing handled compressed DMG templates. The "Fixed" Release Meaning mac os x live dvd highly compressed dvd transmac 81 fixed