GEOS Protection

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On track 21 in the header trail and sector trail the trail has to end with 55 67 55 55 67 before the following sync. Header trails are checked for sector 0 - 18, sector trails for sector 0 to 17 (track trail after last sector is not checked).

There is an extensive description at GEOS protection (german)

Pages that refer to this protection

GEOS DeskPack ‎ (← links)
Descriptions of old disk copy protections ‎ (← links)
GEOS GeoPublish ‎ (← links)
GEOS 64 2.5 ‎ (← links)
GEOS GeoCalc C128 ‎ (← links)
GEOS GeoCalc C64 ‎ (← links)
GEOS GeoFile ‎ (← links)
GEOS GeoFile C128 ‎ (← links)
GEOS 64 2.01 ‎ (← links)
GEOS 128 2.01 ‎ (← links)
GEOS 64 2.0 ‎ (← links)
GEOS GeoWrite Workshop ‎ (← links)
GEOS GeoWrite Workshop 128 ‎ (← links)

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