Solved Understanding DVD File Formats for burning Windows 10 ISO

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October 2, 2014 at 14:14:08
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Hi all,

I recently purchased some Verbatim 4.7 GB DVDs from Amazon.com. I've been downloading various ISOs & doing backups etc. but I've had some issues.

First off, I don't really understand how Mastered/Live File System work...

If you truly can use any DVD like a USB drive, what is the point of a DVD-RW? Why do they even exist? Is it just marketing?

I just downloaded the Windows 10 ISO and tried extracting it to one of the DVDs (formatted with Live File System)...it seemed to work fine, but I apparently forgot to press 'Finish burning data to DVD' or something in Windows, so when I tried to boot from the disc it didn't work.

When I loaded Windows, it showed 0 bytes free & no data on the disc.

So, I figured I'd just redo the extraction. I loaded 7zip and selected the ISO, but when I began extracting to the disc it gave me errors such as "Cannot open file H:\*" with some filename after it. (H:\ is the DVD drive).

I figured maybe some data WAS put on the DVD when I first extracted it, but possibly was corrupt due to me not finalizing the burn. I tried to format the disc, but it came back saying ~ 400 MB free.

Does anyone have any idea what's going on here? Have I ruined the disc? It's not that big of a deal, they were like 20 cents each, but I don't want to waste any more.

Thanks.

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#1
October 2, 2014 at 14:39:53
✔ Best Answer
You have to burn ISO files to a DVD using an appropriate program, such as ImgBurn. You can't just extract the files to a DVD and expect it to be bootable. Forget about what file system is used - it will be whatever was used to create the ISO image.

Use ImgBurn - it just works.


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#2
October 2, 2014 at 15:03:03
The difference between DVD-R and RW is that you each time you burn onto a DVD-R the space reduces until it is full and can no longer be written to. DVD-RW allows you to erase files and gain the space, although they are generally considered less reliable because of the re-burning.

Always pop back and let us know the outcome - thanks


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#3
October 2, 2014 at 15:07:32
OK, I'll try out ImgBurn...why is it that you can't just extract the files? What happens when you 'burn' it that is different?

So basically when Microsoft says you can use it as a flash drive, it just means that you can add more files to it after you burn some to it.

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#4
October 2, 2014 at 15:23:55
Ah, I think I understand now, by formatting the disc with either Mastered or Live File System it adds some files (directory, journal, etc.) which prevent the drive from being bootable.

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#5
October 2, 2014 at 22:53:24
No, it's not added files. It's what isn't put on the disk (boot sector etc.). An ISO file is an image of a bootable DVD. ImgBurn copies this sector by sector, producing a perfect copy of the image with everything in the same place and everything copied.

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#6
October 3, 2014 at 08:44:06
Re #3

I have unzipped Linux bootable CD's then burnt the extracted folders and files onto disk and gotten away with it. Best use ImgBurn though, it is made for the job and very easy to use. Most burner software (such as Nero) has a "burn an image" or "burn an ISO" feature.

Always pop back and let us know the outcome - thanks


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#7
October 3, 2014 at 11:33:26
Pay attention when installing ImgBurn. Make sure to uncheck the boxes so that none of the bundled crapware is installed.

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