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

Thu Mar 18 13:36:24 UTC 2021
Lamar Owen <lowen at pari.edu>

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%.