You can boot Linux ISO directly from your HDD with grml-rescueboot utility. You don't need a CD, DVD, or USB drive anymore. You don't need to burn anything. And no need to formally configure anything. Just put an ISO then update your GRUB and it's done. Actually, grml modifies your GRUB to recognize an ISO you provide and to boot it. Finally, you can have more than one ISO to boot at any time you start your computer.
|Boot Linux ISO Directly from The HDD|
- By GUI, you can search for grml-rescueboot in Ubuntu Software Center.
- By Terminal, you can use this command:
sudo apt-get install grml-rescueboot
Copy ISO File
Firstly, create /boot/grml/ directory if it does not exist. To create it, use command sudo mkdir /boot/grml/. If it does exist, continue.
Secondly, to create a live Linux boot with grml, you just need to copy a Linux ISO to /boot/grml/ directory. Yes, as easy as that! To do that, you may choose either using GUI or Terminal. By GUI, just open first your Nautilus as root by command sudo nautilus in Terminal. Then just copy your ISO there by click.
By Terminal, you can do this command:
sudo cp -v /path/to/your/iso.iso /boot/grml
Update Your GRUB
You can only do this by Terminal. Do this command.
sudo update-grubNormal output will be like these.
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-3.2.0-23-generic-pae
Found initrd image: /boot/initrd.img-3.2.0-23-generic-pae
Found memtest86+ image: /boot/memtest86+.bin
Found Grml ISO image: /boot/grml/BlankOn-9.0-desktop-amd64.iso
Found Grml ISO image: /boot/grml/GhostBSD4.0-RELEASE-i386.iso
Found Grml ISO image: /boot/grml/blankon-tambora-desktop-i386.iso
Found Grml ISO image: /boot/grml/kubuntu-15.04-desktop-i386.iso
Found Grml ISO image: /boot/grml/ubuntu-15.04-desktop-i386.iso
Then restart your computer. See that a bootloader should appear. Entry option started with Grml Rescue System will appear. Choose that entry and you boot into your Linux. If a bootloader doesn't appear when boot, hold Shift button when rebooting.