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Groups > linux.debian.user > #162375
| From | "Thomas Schmitt" <scdbackup@gmx.net> |
|---|---|
| Newsgroups | linux.debian.user |
| Subject | Re: Putting It All On a Stick |
| Date | 2015-12-31 17:30 +0100 |
| Message-ID | <qLOgV-6Ka-5@gated-at.bofh.it> (permalink) |
| References | <qLNkS-68I-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Hi,
Steve Matzura:
> Thomas, just dd the file? That really works?
Yes. It's called "isohybrid".
http://www.syslinux.org/wiki/index.php/Isohybrid
As said: Copy it onto the base device, the whole "disk".
It must overwrite MBR, partition table, GPT, whatever partitioning
and boot sector is present on the disk.
Common mistakes are to copy it as data file into a file system,
or as filesystem image into a partition of the "disk".
> I've heard of this being the way to do things, but find it hard to
> understand how it could work. I suppose the boot loaders know what to
> do with ISO images.
It is an interesting adventure to boot on as many systems as possible:
{ BIOS, EFI, Mac firmware, ... } x { Hard disk/USB stick, CD/DVD/BD }
MBR x86 boot code at the start of the ISO image brings you to
the file
/isolinux/isolinux.bin
in the ISO image, where CD booting would start too.
The MBR bears a partition table. Partition 1 has the
"bootable/active" flag for stubborn BIOSes which would not
boot without it. Partition 2 is the EFI System Partition:
$ /sbin/fdisk -l debian-8.2.0-amd64-BD-1.iso
...
Device Boot Start End Sectors Size Id Type
debian-8.2.0-amd64-BD-1.iso1 * 0 43859651 43859652 20.9G 0 Empty
debian-8.2.0-amd64-BD-1.iso2 75632 76463 832 416K ef EFI (FAT-12/16/32)
Because SYSLINUX does not boot from CD via EFI firmware,
the EFI equipment is of GRUB2.
If you mount the ISO
# mkdir /mnt/iso
# mount -o loop debian-8.2.0-amd64-BD-1.iso /mnt/iso
then you can mount the EFI System Partition as FAT filesystem
# mkdir /mnt/fat
# mount -o loop /mnt/iso/boot/grub/efi.img /mnt/fat
and see
# ls -l /mnt/fat/efi/boot/bootx64.efi
-rwxr-xr-x 1 root root 392192 Sep 6 11:14 /mnt/fat/efi/boot/bootx64.efi
This file brings you from EFI to the GRUB2 configuration in
/mnt/iso/boot/grub
For certain old x86 Macs there may be even a HFS+ filesystem
with blessings and all. debian-cd does not do this. But Fedora
LiveCD has HFS+.
The result from grub-mkrescue has HFS+ too. It uses GRUB2 for
both, BIOS and EFI.
Debian just has an Apple Partition Map entry which points to
the EFI System Partition. (I would really like to know whether
this is of any paractical use.)
Have a nice day :)
Thomas
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Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-29 22:30 +0100
Re: Putting It All On a Stick "Andrew M.A. Cater" <amacater@galactic.demon.co.uk> - 2015-12-29 22:40 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-30 03:00 +0100
Re: Putting It All On a Stick Rick Thomas <rbthomas@pobox.com> - 2015-12-30 05:40 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-30 15:00 +0100
Re: Putting It All On a Stick <tomas@tuxteam.de> - 2015-12-30 10:50 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-30 15:10 +0100
Re: Putting It All On a Stick Lisi Reisz <lisi.reisz@gmail.com> - 2015-12-30 16:30 +0100
Re: Putting It All On a Stick Lisi Reisz <lisi.reisz@gmail.com> - 2015-12-30 16:40 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-30 16:50 +0100
Re: Putting It All On a Stick Lisi Reisz <lisi.reisz@gmail.com> - 2015-12-30 19:50 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-30 16:40 +0100
Re: Putting It All On a Stick Brian <ad44@cityscape.co.uk> - 2015-12-30 18:30 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-30 19:00 +0100
Re: Putting It All On a Stick Brian <ad44@cityscape.co.uk> - 2015-12-30 19:20 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-30 19:30 +0100
Re: Putting It All On a Stick Brian <ad44@cityscape.co.uk> - 2015-12-30 20:00 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-30 20:40 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-30 20:50 +0100
Re: Putting It All On a Stick Lisi Reisz <lisi.reisz@gmail.com> - 2015-12-30 21:00 +0100
Re: Putting It All On a Stick Lisi Reisz <lisi.reisz@gmail.com> - 2015-12-30 20:50 +0100
Re: Putting It All On a Stick Joe <joe@jretrading.com> - 2015-12-30 21:40 +0100
Re: Putting It All On a Stick Lisi Reisz <lisi.reisz@gmail.com> - 2015-12-31 00:10 +0100
Re: Putting It All On a Stick Joe <joe@jretrading.com> - 2015-12-31 10:30 +0100
Re: Putting It All On a Stick Lisi Reisz <lisi.reisz@gmail.com> - 2015-12-31 11:30 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-31 16:30 +0100
Re: Putting It All On a Stick Brian <ad44@cityscape.co.uk> - 2015-12-31 17:10 +0100
Re: Putting It All On a Stick Richard Owlett <rowlett@cloud85.net> - 2016-01-01 16:40 +0100
Re: Putting It All On a Stick Brian <ad44@cityscape.co.uk> - 2015-12-30 21:30 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-30 22:20 +0100
Re: Putting It All On a Stick "Thomas Schmitt" <scdbackup@gmx.net> - 2015-12-30 22:40 +0100
Re: Putting It All On a Stick Rick Thomas <rbthomas@pobox.com> - 2015-12-31 02:20 +0100
Re: Putting It All On a Stick "Thomas Schmitt" <scdbackup@gmx.net> - 2015-12-31 10:20 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-31 16:50 +0100
Re: Putting It All On a Stick Richard Owlett <rowlett@cloud85.net> - 2016-01-01 15:20 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-31 16:30 +0100
Re: Putting It All On a Stick Joe <joe@jretrading.com> - 2015-12-31 16:50 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-31 17:10 +0100
Re: Putting It All On a Stick "Thomas Schmitt" <scdbackup@gmx.net> - 2015-12-31 17:30 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-31 18:00 +0100
Re: Putting It All On a Stick "Thomas Schmitt" <scdbackup@gmx.net> - 2015-12-31 18:20 +0100
Re: Putting It All On a Stick Eduard Bloch <edi@gmx.de> - 2015-12-31 19:20 +0100
Re: Putting It All On a Stick John Hasler <jhasler@newsguy.com> - 2015-12-31 19:30 +0100
Re: Putting It All On a Stick "Thomas Schmitt" <scdbackup@gmx.net> - 2016-01-01 11:40 +0100
Re: Putting It All On a Stick Brian <ad44@cityscape.co.uk> - 2015-12-31 18:30 +0100
Re: Putting It All On a Stick <tomas@tuxteam.de> - 2015-12-31 19:00 +0100
Re: Putting It All On a Stick Brian <ad44@cityscape.co.uk> - 2015-12-31 20:20 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-31 16:40 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-31 17:20 +0100
Re: Putting It All On a Stick Brian <ad44@cityscape.co.uk> - 2015-12-31 17:50 +0100
Re: Putting It All On a Stick Steve Matzura <sm@noisynotes.com> - 2015-12-31 18:00 +0100
Re: Putting It All On a Stick Rick Thomas <rbthomas@pobox.com> - 2016-01-02 22:00 +0100
Re: Putting It All On a Stick "Thomas Schmitt" <scdbackup@gmx.net> - 2015-12-31 18:00 +0100
Re: Putting It All On a Stick Brian <ad44@cityscape.co.uk> - 2015-12-31 17:20 +0100
Re: Putting It All On a Stick Lisi Reisz <lisi.reisz@gmail.com> - 2015-12-30 20:40 +0100
Re: Putting It All On a Stick Brian <ad44@cityscape.co.uk> - 2015-12-30 21:00 +0100
Re: Putting It All On a Stick Lisi Reisz <lisi.reisz@gmail.com> - 2015-12-31 00:10 +0100
Re: Putting It All On a Stick Brian <ad44@cityscape.co.uk> - 2015-12-31 00:20 +0100
Re: Putting It All On a Stick Chris Bannister <cbannister@slingshot.co.nz> - 2016-01-01 16:20 +0100
Re: Putting It All On a Stick Brian <ad44@cityscape.co.uk> - 2016-01-01 17:20 +0100
Re: Putting It All On a Stick Chris Bannister <cbannister@slingshot.co.nz> - 2016-01-06 15:00 +0100
Re: Putting It All On a Stick Lisi Reisz <lisi.reisz@gmail.com> - 2016-01-06 16:50 +0100
Re: Putting It All On a Stick Brian <ad44@cityscape.co.uk> - 2016-01-06 20:30 +0100
Re: Putting It All On a Stick Rick Thomas <rbthomas@pobox.com> - 2015-12-30 21:00 +0100
Re: Putting It All On a Stick Brian <ad44@cityscape.co.uk> - 2015-12-30 22:00 +0100
Re: Putting It All On a Stick Lisi Reisz <lisi.reisz@gmail.com> - 2015-12-30 19:50 +0100
Re: Putting It All On a Stick <tomas@tuxteam.de> - 2015-12-30 16:50 +0100
Re: Putting It All On a Stick Richard Owlett <rowlett@cloud85.net> - 2015-12-30 18:00 +0100
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