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Genisoimage "Read-Only" Commandline?
Post 302925810 by LinQ on Wednesday 19th of November 2014 12:25:26 PM
11-19-2014
@ygemici:
Good eye!
From the manpages (genisoimage, mkisofs):
As this parameter seems to be rather ubiquitous in the context of pre-specified distro ISO build commandlines, could someone elaborate on what the implications might be for an ISO generated without calling -boot-info-table at build time (in both CD/DVD and flash media endpoint contexts)?
@Corona688:
Sounds like a clever workaround! Thanks for adding to the discussion
For those of us who might not be familiar with this niche, what would an implementation of a unionfs mountup look like in this scenario?
Thanks again, all; and have a great day.
Good eye!
From the manpages (genisoimage, mkisofs):
Quote:
-boot-info-table
Specifies that a 56-byte table with information of the CD-ROM
layout will be patched in at offset 8 in the boot file. If this
option is given, the boot file is modified in the source
filesystem, so make a copy of this file if it cannot be easily
regenerated! See the EL TORITO BOOT INFO TABLE section for a
description of this table.
Specifies that a 56-byte table with information of the CD-ROM
layout will be patched in at offset 8 in the boot file. If this
option is given, the boot file is modified in the source
filesystem, so make a copy of this file if it cannot be easily
regenerated! See the EL TORITO BOOT INFO TABLE section for a
description of this table.
@Corona688:
Sounds like a clever workaround! Thanks for adding to the discussion
For those of us who might not be familiar with this niche, what would an implementation of a unionfs mountup look like in this scenario?
Thanks again, all; and have a great day.
Last edited by LinQ; 11-19-2014 at 01:34 PM.. Reason: Clarification . . .
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LEARN ABOUT XFREE86
bootctl
BOOTCTL(1) bootctl BOOTCTL(1) NAME
bootctl - Control the firmware and boot manager settings SYNOPSIS
bootctl [OPTIONS...] status bootctl [OPTIONS...] list bootctl [OPTIONS...] update bootctl [OPTIONS...] install bootctl [OPTIONS...] remove DESCRIPTION
bootctl checks, updates, installs or removes the boot loader from the current system. bootctl status checks and prints the currently installed versions of the boot loader binaries and all current EFI boot variables. bootctl list displays all configured boot loader entries. bootctl update updates all installed versions of systemd-boot, if the current version is newer than the version installed in the EFI system partition. This also includes the EFI default/fallback loader at /EFI/BOOT/BOOT*.EFI. A systemd-boot entry in the EFI boot variables is created if there is no current entry. The created entry will be added to the end of the boot order list. bootctl install installs systemd-boot into the EFI system partition. A copy of systemd-boot will be stored as the EFI default/fallback loader at /EFI/BOOT/BOOT*.EFI. A systemd-boot entry in the EFI boot variables is created and added to the top of the boot order list. bootctl remove removes all installed versions of systemd-boot from the EFI system partition, and removes systemd-boot from the EFI boot variables. If no command is passed, status is implied. OPTIONS
The following options are understood: -h, --help Print a short help text and exit. --version Print a short version string and exit. --path= Path to the EFI System Partition (ESP). If not specified, /efi, /boot, and /boot/efi are checked in turn. It is recommended to mount the ESP to /boot, if possible. -p, --print-path This option modifies the behaviour of status. Just print the path to the EFI System Partition (ESP) to standard output and exit. --no-variables Do not touch the EFI boot variables. EXIT STATUS
On success, 0 is returned, a non-zero failure code otherwise. SEE ALSO
Boot loader specification[1] systemd boot loader interface[2] NOTES
1. Boot loader specification https://www.freedesktop.org/wiki/Specifications/BootLoaderSpec 2. systemd boot loader interface https://www.freedesktop.org/wiki/Software/systemd/BootLoaderInterface systemd 237 BOOTCTL(1)