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Full Discussion: Ubuntu Ultimate install from system.
Operating Systems Linux Ubuntu Ubuntu Ultimate install from system. Post 302505319 by Corona688 on Wednesday 16th of March 2011 04:57:54 PM
Old 03-16-2011
There's not a magic "make-flash-drive-act-like-bootable-CDROM" program; even if you fooled the BIOS somehow, everything'd break down the instant things started loading device drivers. It's possible to mount the ISO as a loop device though, but then the programs on disk would start pining for a CDROM drive of some sort. Unless you specifically told them somehow that they were to use this disk image instead, and the programs on the ISO had the ability to use such options. So making a USB-based installer is pretty much tantamount to either 1) installing it on the USB drive, or 2) extracting the contents of the ISO onto it and modifying them by hand, or 3) Dumping the images on it, installing a bootloader and the correct kernel+modules+initrd, and using special distro-specific boot options to allow it to use a given ISO image instead of a cdrom.

So all of these are distro-specific, and all of these are going to be pretty difficult when he can't get the information out of the the ISO. There's not a generic solution.
Last edited by Corona688; 03-16-2011 at 06:17 PM..
This User Gave Thanks to Corona688 For This Post:
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LEARN ABOUT X11R4

grub-install

GRUB-INSTALL(8) 					  System Administration Utilities					   GRUB-INSTALL(8)

NAME

       grub-install - install GRUB to a device

SYNOPSIS

       grub-install [OPTION...] [OPTION] [INSTALL_DEVICE]

DESCRIPTION

       Install GRUB on your drive.

       --compress=no|xz|gz|lzo
	      compress GRUB files [optional]

       -d, --directory=DIR
	      use images and modules under DIR [default=/usr/lib/grub/<platform>]

       --fonts=FONTS
	      install FONTS [default=unicode]

       --install-modules=MODULES
	      install only MODULES and their dependencies [default=all]

       -k, --pubkey=FILE
	      embed FILE as public key for signature checking

       --locale-directory=DIR use translations under DIR
	      [default=/usr/share/locale]

       --locales=LOCALES
	      install only LOCALES [default=all]

       --modules=MODULES
	      pre-load specified modules MODULES

       --themes=THEMES
	      install THEMES [default=starfield]

       -v, --verbose
	      print verbose messages.

       --allow-floppy
	      make the drive also bootable as floppy (default for fdX devices). May break on some BIOSes.

       --auto-nvram
	      only update NVRAM variables if possible. This option is only available on EFI and IEEE1275 targets.

       --boot-directory=DIR
	      install GRUB images under the directory DIR/grub instead of the boot/grub directory

       --bootloader-id=ID
	      the ID of bootloader. This option is only available on EFI and Macs.

       --core-compress=xz|none|auto
	      choose the compression to use for core image

       --disk-module=MODULE
	      disk module to use (biosdisk or native). This option is only available on BIOS target.

       --efi-directory=DIR
	      use DIR as the EFI System Partition root.

       --force
	      install even if problems are detected

       --force-file-id
	      use identifier file even if UUID is available

       --label-bgcolor=COLOR
	      use COLOR for label background

       --label-color=COLOR
	      use COLOR for label

       --label-font=FILE
	      use FILE as font for label

       --macppc-directory=DIR use DIR for PPC MAC install.

       --no-bootsector
	      do not install bootsector

       --no-extra-removable
	      Do not install bootloader code to the removable media path. This option is only available on EFI.

       --no-nvram
	      don't update the `boot-device'/`Boot*' NVRAM variables. This option is only available on EFI and IEEE1275 targets.

       --no-rs-codes
	      Do not apply any reed-solomon codes when embedding core.img. This option is only available on x86 BIOS targets.

       --no-uefi-secure-boot
	      do  not install an image usable with UEFI Secure Boot, even if the system was currently started using it. This option is only avail-
	      able on EFI.

       --product-version=STRING
	      use STRING as product version

       --recheck
	      delete device map if it already exists

       --removable
	      the installation device is removable. This option is only available on EFI.

       -s, --skip-fs-probe
	      do not probe for filesystems in DEVICE

	      Usage: grub-install [OPTION...] [OPTION] [INSTALL_DEVICE]

       Install GRUB on your drive.

       --compress=no|xz|gz|lzo
	      compress GRUB files [optional]

       -d, --directory=DIR
	      use images and modules under DIR [default=/usr/lib/grub/<platform>]

       --fonts=FONTS
	      install FONTS [default=unicode]

       --install-modules=MODULES
	      install only MODULES and their dependencies [default=all]

       -k, --pubkey=FILE
	      embed FILE as public key for signature checking

       --locale-directory=DIR use translations under DIR
	      [default=/usr/share/locale]

       --locales=LOCALES
	      install only LOCALES [default=all]

       --modules=MODULES
	      pre-load specified modules MODULES

       --themes=THEMES
	      install THEMES [default=starfield]

       -v, --verbose
	      print verbose messages.

       --allow-floppy
	      make the drive also bootable as floppy (default for fdX devices). May break on some BIOSes.

       --auto-nvram
	      only update NVRAM variables if possible. This option is only available on EFI and IEEE1275 targets.

       --boot-directory=DIR
	      install GRUB images under the directory DIR/grub instead of the boot/grub directory

       --bootloader-id=ID
	      the ID of bootloader. This option is only available on EFI and Macs.

       --core-compress=xz|none|auto
	      choose the compression to use for core image

       --disk-module=MODULE
	      disk module to use (biosdisk or native). This option is only available on BIOS target.

       --efi-directory=DIR
	      use DIR as the EFI System Partition root.

       --force
	      install even if problems are detected

       --force-file-id
	      use identifier file even if UUID is available

       --label-bgcolor=COLOR
	      use COLOR for label background

       --label-color=COLOR
	      use COLOR for label

       --label-font=FILE
	      use FILE as font for label

       --macppc-directory=DIR use DIR for PPC MAC install.

       --no-bootsector
	      do not install bootsector

       --no-extra-removable
	      Do not install bootloader code to the removable media path. This option is only available on EFI.

       --no-nvram
	      don't update the `boot-device'/`Boot*' NVRAM variables. This option is only available on EFI and IEEE1275 targets.

       --no-rs-codes
	      Do not apply any reed-solomon codes when embedding core.img. This option is only available on x86 BIOS targets.

       --no-uefi-secure-boot
	      do not install an image usable with UEFI Secure Boot, even if the system was currently started using it. This option is only  avail-
	      able on EFI.

       --product-version=STRING
	      use STRING as product version

       --recheck
	      delete device map if it already exists

       --removable
	      the installation device is removable. This option is only available on EFI.

       -s, --skip-fs-probe
	      do not probe for filesystems in DEVICE

       --target=TARGET
	      install  GRUB  for  TARGET  platform  [default=i386-pc];	available targets: arm-efi, arm-uboot, arm64-efi, i386-coreboot, i386-efi,
	      i386-ieee1275, i386-multiboot, i386-pc,  i386-qemu,  i386-xen,  ia64-efi,  mips-arc,  mips-qemu_mips,  mipsel-arc,  mipsel-loongson,
	      mipsel-qemu_mips, powerpc-ieee1275, sparc64-ieee1275, x86_64-efi, x86_64-xen

       --uefi-secure-boot
	      install  an  image  usable  with UEFI Secure Boot.  This option is only available on EFI and if the grub-efi-amd64-signed package is
	      installed.

       -?, --help
	      give this help list

       --usage
	      give a short usage message

       -V, --version
	      print program version

       Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.

       INSTALL_DEVICE must be system device filename.  grub-install copies GRUB images into boot/grub.	On some platforms,  it	may  also  install
       GRUB into the boot sector.

REPORTING BUGS

       Report bugs to <bug-grub@gnu.org>.

SEE ALSO

       grub-mkconfig(8), grub-mkimage(1), grub-mkrescue(1)

       The full documentation for grub-install is maintained as a Texinfo manual.  If the info and grub-install programs are properly installed at
       your site, the command

	      info grub-install

       should give you access to the complete manual.

grub-install (GRUB) 2.02-2ubuntu8.3				     July 2018							   GRUB-INSTALL(8)
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