The reason its not booting has to do with the region code setting. You can install puppy linux and run regioncode to set the drive to your region There are eight region codes possible, currently six are used: North America (USA and Canada)Europe, Middle East, South Africa and JapanSoutheast Asia, Taiwan, KoreaLatin America, Australia, New ZealandFormer Soviet Union (Russia, Ukraine, etc.), rest of Africa, IndiaChina DVDs contain most often a region code flag indicating the geographical region where the DVD was published (enabling the film and software industry to control the distribution).  [IMAGE]WOOF Puppy still runs clean and mean live from a CDR     It will boot fine every day from a CD but WILL NOT BOOT from a DVD that is region coded. Puppy linux CD likely works fine burn a copy on cdr and F12 boot from that. Once your region is set if the dvd is legit and for your country it will boot windows dvd. dont forget to press enter when you see the press any key to boot from CD. [URL] Fossapup64 Puppy 9.5 - released September 2020 This is the fourth official release of an Ubuntu based 64 bit Puppy [URL]       BIOS (Basic Input/Output System) based computers have been around for a long time. Most people familiar with computers have been into the BIOS setup at some point to change a setting such as boot device order or the system time. UEFI (Unified Extensible Firmware Interface) is a standard and is (however much a pain it is) necessary to help address the limitation of BIOS/MBR systems limit of support for hard disks above 2 TB. MBR can not work on large disks. It is fairly inexpensive these days to replace your current harddisk with a 4 TB or even 6 TB. You must turn secure boot off for an os that doesnt have security certificate from microsoft to F12 boot.  Dells in general will not show the F12 boot menu when secure boot is on so you F2 into bios setup and turn it off. Simply type the following command to install regionset: $ sudo apt-get install regionset then run by Typing the command as follows: # regionset /dev/dvd    
Hi all, The recently purchased Optiplex 5080 does not boot from the CD Drive. The CD Drive appears everywhere except of the Boot Sequence setting. Following the new guide [URL] doesn't help because in the File System List the value "CD" does not appear. The version of this BIOS is not covered on the guide. Can someone please advise? Thank you.  
Dell Optiplex 5080 unable to boot from CD/DVD