M.3 Physical Media
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## M.3 Physical Media

The physical media shall be the 130 mm Magneto-Optical Re-writable Disk with 512 bytes per sector. It shall be compatible with the standard defined in the ISO/IEC 15286:1999 Data Interchange on 130mm Optical Disk Cartridges - Capacity 5.2GB Per Cartridge standard.

### Note

The 4.1GB nomenclature refers to the capacity when formatted with 512 bytes per sector compared to the 5.2 GB nomenclature when formatted with 1024 bytes per sector.

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