Install DVD creation support

General support questions
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glen4cindy
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Joined: 2020/05/18 01:42:21

Install DVD creation support

Post by glen4cindy » 2020/05/18 02:07:54

Hello,

I've tried twice and failed to produce a working DVD to install CentOS 7 and I am not sure what is going wrong.

I cannot find any information on the download page or in the FAQ that deals with this issue.

When I attempt to burn the .iso I am presented with the following error:
Image Size.JPG
Image Size.JPG (26.74 KiB) Viewed 78 times
If I choose "Overburn" the entire burn fails. If I choose "Truncate" I get the following error when attempting to boot:
Fail Boot.JPG
Fail Boot.JPG (61.64 KiB) Viewed 78 times
I fail to understand why the image is just a bit too big to burn.

Can someone point me in the right direction?

Thanks in advance.

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TrevorH
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Re: Install DVD creation support

Post by TrevorH » 2020/05/18 08:19:40

It requires a dual layer DVD which is twice as large as a normal one.
CentOS 6 will die in November 2020 - migrate sooner rather than later!
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 is dead, do not use it.
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glen4cindy
Posts: 2
Joined: 2020/05/18 01:42:21

Re: Install DVD creation support

Post by glen4cindy » 2020/05/18 14:23:25

TrevorH wrote:
2020/05/18 08:19:40
It requires a dual layer DVD which is twice as large as a normal one.
I would have thought that a blank 4.7 GB would have sufficient size. 4700 MB?

Am I being bitten here by the stated size vs. how the computer sees the bits and bytes?

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TrevorH
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Re: Install DVD creation support

Post by TrevorH » 2020/05/18 14:27:43

Yes, it's the difference between base 10 and base 2, GB vs GiB. 4700000000 = 4482MiB = 4.37GiB.
CentOS 6 will die in November 2020 - migrate sooner rather than later!
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 is dead, do not use it.
Full time Geek, part time moderator. Use the FAQ Luke

tunk
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Joined: 2017/02/22 15:08:17

Re: Install DVD creation support

Post by tunk » 2020/05/18 21:00:05

Probably not recommended, the CentOS 7.7 iso should fit.
If you do so, run yum update immediately after installation.

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