Re: Nanobsd on a CD-ROM
J. Porter Clark wrote: > I don't have a way to make such an image without using mkisofs. > Figuring out how to pack the nanobsd image in such a way that > mkisofs can make an "El Torito" bootable CD from it sounds > difficult, offhand. Anybody know how to do this sort of thing? > Is it even possible? Yes, of course this is possible. Think of the the FreeBSD installation images that boot from CD too. I did this already with a custom distribution, but I don't remember the steps right now. /boot/cdboot is the boot code that should do this. Take a look at /usr/src/release/i386/mkisoimages.sh. Björn ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Nanobsd on a CD-ROM
Wojciech Puchar wrote: >> Then make an ISO of the mounted nanobsd image >> >> mkisofs -J -R -no-emul-boot -b /boot/cdboot \ >> -iso-level 3 -o nanobsd.iso /mnt/image > > i don't know if -J is needed (rather not), and -iso-level 3 too, but it > is OK. True, I just grabbed a command line I've used in the past., like I said, needs polishing. I'm building a nanobsd image at the moment to have a play (slow afternoon at work ;) Vince ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Nanobsd on a CD-ROM
Then make an ISO of the mounted nanobsd image mkisofs -J -R -no-emul-boot -b /boot/cdboot \ -iso-level 3 -o nanobsd.iso /mnt/image i don't know if -J is needed (rather not), and -iso-level 3 too, but it is OK. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Nanobsd on a CD-ROM
to make a freebsd CDROM bootable you need to use the /boot/cdboot as the loader and make an ISO image. the nanobsd procedure creates a ufs disk image from what I understand. Try mounting the disk image mdconfig -a -t vnode -u 11 -f /path/to/image/_.disk.full mkdir /mnt/image mount /dev/md11 /mnt/image (might be /dev/md11s1a or similar, see whats created and find what works.) Then make an ISO of the mounted nanobsd image mkisofs -J -R -no-emul-boot -b /boot/cdboot \ -iso-level 3 -o nanobsd.iso /mnt/image Then either burn it to CD or install qemu to see if it boots before making another coaster. I havent tried this exactly but this should work, may need polishing though. Vince J. Porter Clark wrote: > On Thu, Jun 12, 2008 at 06:54:45PM +0200, Pietro Cerutti wrote: >> >> J. Porter Clark wrote: >> | On Thu, Jun 12, 2008 at 04:40:25PM +0200, Pietro Cerutti wrote: >> |> J. Porter Clark wrote: >> |> | Is it possible to build a CD-ROM with a bootable NanoBSD on it? >> |> | If so, how? >> |> >> |> Yes, Section 2.2 of >> |> >> |> http://www.freebsd.org/doc/en/articles/nanobsd/index.html >> | >> | Well, no, because I can't do this: >> | >> | # dd if=_.disk.full of=/dev/acd0 bs=64k >> | >> | If I do this: >> | >> | % cdrecord -v -immed driveropts=burnfree dev=1,0,0 -data _.disk.full >> >> Try with burncd >> >> | burncd -f /dev/acd0 data _.disk.full fixate > > No joy. Produces the same disk that cdrecord does, and boots > from hard disk instead. > > I think that this is the problem: The BIOS knows how to boot > from a CD if and only if that CD is an "El Torito" bootable > image. That is, the first sector of the CD is NOT a Master Boot > Record. That's just a hypothesis based on the observation that > all of the successfully bootable CDs I have appear to be in "El > Torito" format. > > I don't have a way to make such an image without using mkisofs. > Figuring out how to pack the nanobsd image in such a way that > mkisofs can make an "El Torito" bootable CD from it sounds > difficult, offhand. Anybody know how to do this sort of thing? > Is it even possible? > ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Nanobsd on a CD-ROM
On Thu, Jun 12, 2008 at 06:54:45PM +0200, Pietro Cerutti wrote: > > > J. Porter Clark wrote: > | On Thu, Jun 12, 2008 at 04:40:25PM +0200, Pietro Cerutti wrote: > |> J. Porter Clark wrote: > |> | Is it possible to build a CD-ROM with a bootable NanoBSD on it? > |> | If so, how? > |> > |> Yes, Section 2.2 of > |> > |> http://www.freebsd.org/doc/en/articles/nanobsd/index.html > | > | Well, no, because I can't do this: > | > | # dd if=_.disk.full of=/dev/acd0 bs=64k > | > | If I do this: > | > | % cdrecord -v -immed driveropts=burnfree dev=1,0,0 -data _.disk.full > > Try with burncd > > | burncd -f /dev/acd0 data _.disk.full fixate No joy. Produces the same disk that cdrecord does, and boots from hard disk instead. I think that this is the problem: The BIOS knows how to boot from a CD if and only if that CD is an "El Torito" bootable image. That is, the first sector of the CD is NOT a Master Boot Record. That's just a hypothesis based on the observation that all of the successfully bootable CDs I have appear to be in "El Torito" format. I don't have a way to make such an image without using mkisofs. Figuring out how to pack the nanobsd image in such a way that mkisofs can make an "El Torito" bootable CD from it sounds difficult, offhand. Anybody know how to do this sort of thing? Is it even possible? -- J. Porter Clark <[EMAIL PROTECTED]> ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Nanobsd on a CD-ROM
-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 J. Porter Clark wrote: | On Thu, Jun 12, 2008 at 04:40:25PM +0200, Pietro Cerutti wrote: |> J. Porter Clark wrote: |> | Is it possible to build a CD-ROM with a bootable NanoBSD on it? |> | If so, how? |> |> Yes, Section 2.2 of |> |> http://www.freebsd.org/doc/en/articles/nanobsd/index.html | | Well, no, because I can't do this: | | # dd if=_.disk.full of=/dev/acd0 bs=64k | | If I do this: | | % cdrecord -v -immed driveropts=burnfree dev=1,0,0 -data _.disk.full Try with burncd | burncd -f /dev/acd0 data _.disk.full fixate | | then try to boot the machine from the CD-R, I get a "-" cursor | for a second or two, then it switches over to the hard disks to | boot from. | | Okay, it's possible I messed up the compilation options or | something. Is the cdrecord command above the correct procedure | to use to build a bootable nanobsd CD-R? | - -- Pietro Cerutti [EMAIL PROTECTED] PGP Public Key: http://gahr.ch/pgp -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.9 (FreeBSD) iEYEAREKAAYFAkhRVNQACgkQwMJqmJVx945fSwCg0AmvDiM+ygiTun1hbqAY4n2d DtAAn0avabwFvirbzBwMF2lfn1/CTnng =RZKx -END PGP SIGNATURE- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Nanobsd on a CD-ROM
On Thu, Jun 12, 2008 at 04:40:25PM +0200, Pietro Cerutti wrote: > > J. Porter Clark wrote: > | Is it possible to build a CD-ROM with a bootable NanoBSD on it? > | If so, how? > > Yes, Section 2.2 of > > http://www.freebsd.org/doc/en/articles/nanobsd/index.html Well, no, because I can't do this: # dd if=_.disk.full of=/dev/acd0 bs=64k If I do this: % cdrecord -v -immed driveropts=burnfree dev=1,0,0 -data _.disk.full then try to boot the machine from the CD-R, I get a "-" cursor for a second or two, then it switches over to the hard disks to boot from. Okay, it's possible I messed up the compilation options or something. Is the cdrecord command above the correct procedure to use to build a bootable nanobsd CD-R? -- J. Porter Clark <[EMAIL PROTECTED]> ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Nanobsd on a CD-ROM
-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 J. Porter Clark wrote: | Is it possible to build a CD-ROM with a bootable NanoBSD on it? | If so, how? | Yes, Section 2.2 of http://www.freebsd.org/doc/en/articles/nanobsd/index.html - -- Pietro Cerutti [EMAIL PROTECTED] PGP Public Key: http://gahr.ch/pgp -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.9 (FreeBSD) iEYEAREKAAYFAkhRNVgACgkQwMJqmJVx9464GACffZgUQfMvugbKkIqSwifTcZRY wssAn21f0/DRX+ooPdHRvDNWHcA+AXVb =JElR -END PGP SIGNATURE- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Nanobsd on a CD-ROM
Is it possible to build a CD-ROM with a bootable NanoBSD on it? If so, how? -- J. Porter Clark <[EMAIL PROTECTED]> ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
