The new SuperDrives built into the Power Mac G5 (Early 2005), iMac G5 (Ambient Light Sensor) computers, and eMac (Early 2005) computers now support DVD+R DL media, which means in addition to reading Double-Layer DVDs, they can write to a DVD+R DL disc. While single-layer recordable DVDs hold up to 4.7 GB of data, Double-Layer discs have two layers of data, allowing the SuperDrive laser to read and write on both layers, almost doubling the storage to 8.5 GB.
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