system: hp compact dc7800 dual 64 bit cd/dvd: oem sata -- recognized as atapi dvd c dh48c2s sata5 cd/dvd: lg gp60ns50 usb dvd -- recognized as hl-dt-st dvdram gp60ns50
attempting install using centos 6.7 x86_64 netinstall.
after 'installation method' with 'local cd/dvd' selected, famous 'disc not found' shows.
attempt eject cd with eject button fails. ejecting disc drawer with paper clip and closing drawer, selecting 'ok' fails again with 'disc not found'.
iirc, there is a way to correct, but do not recall procedure.
advice greatly appreciated.