Is it possible to install the distribution without using a DVD-disk or a flash drive? Yes. A downloaded iso-image with a distribution on your computer and a special program GRML-rescueboot are enough for this.The instructions below will help you do this without additional physical media: DVD or USB flash drive.
1. First of all, you should already have one of the OS Linux installed and running: Linux Mint/ Ubuntu or another.
2. You should have as well ISO image with the distribution you want to install.
3. Install the GRML-rescueboot program from the Software Manager or run the command in the terminal:
or in the terminal:
When the file manager with administrator rights opens, open the folder with the downloaded iso image and just copy the file to the grml folder.
5. Update GRUB:
6. Restart your computer and you will see a new option in your GRUB boot:
Now you can install this distribution directly from your hard drive by clicking on this option with the down arrow and pressing Enter.
As you can see in the picture, I thus booted up in live-mode Elementary OS 0.4.1, with the possibility of further installation.
Note. People talking not all distributions can be installed in this way. I don’t know why. Try and you will see!
May the Force be with you,