Date: Mon, 20 Mar 2017 14:19:54 -0400 From: Ernie Luzar <luzar722@gmail.com> To: byrnejb@harte-lyne.ca Cc: freebsd-questions@freebsd.org Subject: Re: Unable to create bootable dvd Message-ID: <58D01D4A.9070301@gmail.com> In-Reply-To: <047ac23fa90555e1aa298171e6b7d9ad.squirrel@webmail.harte-lyne.ca> References: <047ac23fa90555e1aa298171e6b7d9ad.squirrel@webmail.harte-lyne.ca>
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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" .
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