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How to burn an ISO to a dual-layer DVD
Dual-layer DVDs hold 8.5 GB for images that overflow a normal disc. cdBurner handles the layer break and writes the ISO faithfully.
Step by step
Connect the burn agent
Open onlinecdburner.com and make sure the burn agent is connected (install it once if needed).
Insert a blank disc big enough for the image
Match the disc to the image size — a CD for small images, a DVD for up to 4.7 GB, a Blu-ray for more.
Choose “ISO image”
Select your .iso (up to 8.5 GB).
Burn the image
cdBurner writes it sector-for-sector so the disc is bootable/readable exactly as intended. Keep Finalize on.
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Why cdBurner is different
There is no other tool on the internet that burns real, physical discs straight from a web page. cdBurner is the first of its kind.
- 100% free — no trial, no watermark, no nag screens.
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- No bloatware — one small signed helper, not a heavy install.
- Built on Windows' native IMAPI2 engine, so your discs read everywhere.