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I have Windows DVD and remote HP server I need to install Windows via ILO. I can not do this via internet because server internet connection is very slow. So I should create Windows DVD image and ask admins to burn it and to connect to server via external DVD-ROM. I've created *iso image of Windows DVD but now I can not write it on standard DVD because image is LARGER than a DVD. How is that possible? Is it kind of protection?

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I can't fully understand the question... Can you try to re-elabourate? – Canadian Luke May 22 '12 at 14:53
why windows dvd iso image can't be burned to blank dvd, nero claims that image is larger than a dvd – javapowered May 22 '12 at 14:55
can you please be more clear about how you try to burn the iso to the DVD? as a file or as an image? – Baarn May 22 '12 at 15:00
as an image. but Nero claims that image is too big. i'm using standard windows dvd and standard DVD-R. I've used NERO to create DVD image – javapowered May 22 '12 at 15:04
Well, what is the file size of the ISO? – iglvzx May 22 '12 at 15:18
up vote 2 down vote accepted

Standard DVDs have a 4.7GB file size limit, dual layer disks have twice that (roughly).

If Nero is saying the image is too big for the disk, it's too big. You either need a bigger disk, or to split the files up onto two disks.

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There are four common different DVD sizes. If the source DVD has more capacity than the destination DVD, you won't be able to perform a one-to-one copy.

From DVD Sizes -, Digital Video Recording:

  • DVD-5 holds 4.7 GB and is supported by the DVD+R/RW and DVD-R/RW formats. It is also known as Single-Sided Single Layer.

  • DVD-10 holds 8.75 GB and is supported by the DVD+R/RW and DVD-R/RW formats. It is also known as Double-Sided Single Layer.

  • DVD-9 holds 8.5 GB and is supported by the DVD+R and DVD-R formats. It is also known as Single-Sided Double Layer (sometimes called Dual Layer). The official names are DVD-R DL and DVD+R DL

  • DVD-18 holds 15.9 GB and is supported by the DVD+R format. It is also known as Double-Sided Double Layer (or Double-Sided Dual Layer).

(formatting mine)

Be aware that GB means gigabyte (1 billion bytes). Windows (wrongfully) uses GB for gibibytes (correct: GiB). As a result, a DVD-5 holds 4.37 GiB.

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If it says it won't fit on the disk, then it won't fit on the disk. But you could try installing windows using a USB drive.

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