Unable to create bootable dvd

[Ernie Luzar]

James B. Byrne via freebsd-questions wrote:
> I have downloaded FreeBSD-11.0-RELEASE-amd64-dvd1.iso.
> 
> I have verified the sha512 hash:
> FreeBSD-11.0-RELEASE-amd64-dvd1.iso: OK
> 
> I have checked that the ISO is bootable:
> file /var/data/disk_images/FreeBSD/FreeBSD-11.0-RELEASE-amd64-dvd1.iso
> 
> /var/data/disk_images/FreeBSD/FreeBSD-11.0-RELEASE-amd64-dvd1.iso: ISO
> 9660 CD-ROM filesystem data '11_0_RELEASE_P1_AMD64_DVD' (bootable)
> 
> However, no matter what technique I use I cannot obtain a bootable DVD
> from this image, or any other FreeBSD provided ISO file either.
> 
> growisofs -speed=1 -dvd-compat -Z
> /dev/sr0=/var/data/disk_images/FreeBSD/FreeBSD-11.0-RELEASE-amd64-dvd1.iso
> fdisk -l /dev/sr0
> . . . a long long time -
> fdisk -l /dev/sr0
> Note: sector size is 2048 (not 512)
> 
> Disk /dev/sr0: 2930 MB, 2930409472 bytes
> 255 heads, 63 sectors/track, 89 cylinders
> Units = cylinders of 16065 * 2048 = 32901120 bytes
> Sector size (logical/physical): 2048 bytes / 2048 bytes
> I/O size (minimum/optimal): 2048 bytes / 2048 bytes
> Disk identifier: 0x00000000
> 
> Now, to verify the software and dvd drive that I am using for this I
> created a dvd from a CentOS-6.7 image.  This works fine.
> 
> fdisk -l /dev/sr0
> Note: sector size is 2048 (not 512)
> 
> Disk /dev/sr0: 1991 MB, 1991245824 bytes
> 64 heads, 32 sectors/track, 474 cylinders
> Units = cylinders of 2048 * 2048 = 4194304 bytes
> Sector size (logical/physical): 2048 bytes / 2048 bytes
> I/O size (minimum/optimal): 2048 bytes / 2048 bytes
> Disk identifier: 0x75c649ae
> 
>     Device Boot      Start         End      Blocks   Id  System
> /dev/sr0p1   *           1        1899     7778304   17  Hidden HPFS/NTFS
> Partition 1 has different physical/logical endings:
>      phys=(1023, 63, 32) logical=(1898, 63, 32)
> 
> 
> SO, what is going on?  What is different about the FreeBSD ISO that
> prevents it from creating a bootable DVD,
> 
> 
> I have tried this on A CentOS-8 linus host and a Windows7Pro host and
> cannot obtain a bootable DVD.  I can create bootable DVD from the
> CentOS ISO on both.
> 
> 


I use this command
cdrecord -v -eject -sao -overburn FreeBSD-11.0-RELEASE-amd64-disc1.iso

To get this command issue "pkg install cdrtools"

.