[CentOS] CentOS-7-x86_64-dvd-2009.iso is too big for DVD blanks

Thu Mar 18 21:11:19 UTC 2021
Japheth Cleaver <cleaver at terabithia.org>

On 3/18/2021 6:36 AM, Lamar Owen wrote:
> On 3/18/21 1:24 AM, John R. Dennison wrote:
>> It's not realistic to expect server-class machines not to be able to
>> boot from dual-layer or USB media in 2021.
> There are environments where USB or other writeable media are not 
> allowed on premises.
> While all DVD-ROM drives are supposed to read DL media, in practice 
> the compatibility has not proven to be 100%.
> _______________________________________________ 

You can safely assume that a DVD+/-R written to by an admin and read in 
by a DVD-ROM is a one-way vector at that data transmission level, with 
nothing beyond the bits happening.

If your USB ports are sealed with epoxy, USB is indeed not an option... 
and that's a feature, not a bug.