5 replies to this topic

[sara - pmedia]

I tried this  - But it does not work

 

 

}

menuentry "ubuntu.iso" {

    linuxefi (loop)/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash iso-scan/filename=/Images/ubuntu.iso noeject noprompt --

    initrdefi (loop)/casper/initrd.lz

}

 

 

menuentry "ubuntu.iso" {

    set root=(hd0,1)

    set isofile="/Images/ubuntu.iso"

    loopback loop $isofile

    linuxefi (loop)/live/vmlinuz boot=live union=overlay username=user config components noswap noeject toram=filesystem.squashfs ip='' nosplash findiso=$isofile splash --

    initrdefi (loop)/live/initrd.img

}

 

[wimb]

Hello sara - pmedia

 

This is a working solution that can be made easily.

 

http://reboot.pro/to...drive/?p=208817

 

http://reboot.pro/to...drive/?p=209075

 

 

 

[wimb]

Download ubuntu-19.04-desktop-amd64.iso from here copied to folder images on FAT32 partition of Portable SSD T5

 

Download UEFI_MULTI-89 from here will make UEFI Grub2 boot configuration files Boot\grub\grub.cfg and Boot\grub\grub_Linux.cfg

 

In case UEFI Grub2 is not available as Boot option in your F8 Boot Menu for your Portable SSD 

then you need to use BOOTICE to Add UEFI entry.

Unneeded for USB-Stick, but UEFI Grub2 boot entry is easily lost in case of Portable SSD.

Select as UEFI Boot entry on USB the Linux Mint Grub2 file \EFI\Boot\BOOTx64.EFI

 

 

More Info on page 8 of

 

 Screenshot from 2019-05-19 06-27-19.png   524.69KB   0 downloads

 

File Boot\grub\grub_Linux.cfg has entry for UEFI Secure booting of ubuntu-19.04-desktop-amd64.iso located in folder images on FAT32 partition of Portable SSD T5

 

where Boot\grub\grub.cfg will export iso_drive

if [ -e "$iso_drive/images/ubuntu-19.04-desktop-amd64.iso" ]; then
menuentry "ISO Ubuntu - ubuntu-19.04-desktop-amd64.iso $iso_drive" {
  set iso_path=/images/ubuntu-19.04-desktop-amd64.iso
  loopback loop $iso_drive$iso_path
  linux (loop)/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper iso-scan/filename=$iso_path quiet splash ---
  initrd (loop)/casper/initrd
}
fi

[steve6375]

Most Ubuntu ISOs contain a loopback.cfg file. This already has the correct cheat codes to boot correctly from an ISO file.

https://rmprepusb.bl...menu-using.html

so you just need to run it from your grub2 menu after using loop to mount the iso file - this way you won't have to change the cheat code line when you come to change Ubuntu version.

configfile /boot/grub/loopback.cfg

[wimb]

I confirm that the ubuntu internal loopback.cfg as proposed by steve6375 can be used. 

It is not enough to just add the configfile line for using loopback.cfg, but it requires in that case a grub2 menuentry as given below

if [ -e "$iso_drive/images/ubuntu-19.04-desktop-amd64.iso" ]; then
menuentry "ISO Ubuntu - ubuntu-19.04-desktop-amd64.iso $iso_drive - loopback.cfg" {
  set iso_path=/images/ubuntu-19.04-desktop-amd64.iso
  export iso_path
  loopback loop $iso_drive$iso_path
  set root=(loop)
  configfile /boot/grub/loopback.cfg
  loopback --delete loop}
fi

 Screenshot from 2019-05-19 09-57-21.png   530.07KB   0 downloads

[sara - pmedia]

Thank you Friends

You are great