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I want to install Ubuntu on my laptop , that doesn't have a CD-ROM drive , and I have no spare USB disk spare. I've tried Wubi , but that doesn't seem to work (since it prompts me to have the CD in the drive, wich I dont have.)

How can I install Ubuntu , easily and in a fast way?

P.s: I want it to dual boot it with Windows 7 (which was preinstalled).


  1. When extracting the ISO to a folder, and run Wubi, it does install, but when I reboot the computer, it doesn't show GRUB , nor I can choose if I want to boot Ubuntu or Windows 7.

  2. After trying for the third time today , wubi gives me an error:

An error occurred:

Permission denied.

I'm the administrator on the pc.

How come?

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Ubuntu installation guides: help.ubuntu.com/community/Installation –  user26687 Jun 17 '14 at 8:07
If you have a spare system, netbooting might be an option. –  muru Jun 17 '14 at 8:10
This is not really a spare system , lol. This is my school laptop , wich had ubuntu before windows 7. –  user294273 Jun 17 '14 at 8:12
show me the screenshots installation with wubi –  ARUL Jun 17 '14 at 8:21
If you have a floppy drive: help.ubuntu.com/community/Installation/WithFloppies –  NewWorld Jun 18 '14 at 8:21

4 Answers 4

up vote 27 down vote accepted

To install Ubuntu without CD/DVD or USB pendrive, follow these steps:

  1. Download Unetbootin from here.

  2. Run Unetbootin.

  3. Now, from the drop-down menu under Type: select Hard Disk.

    Hard Disk

  4. Next select the Diskimage. Browse to the directory where you downloaded the iso file of Ubuntu.


  5. Press OK.

  6. Next when you reboot, you will get a menu like this:


  7. Select Unetbootin and you will get the "Try" or "Install" option there.

  8. Finally, you can install your version of Ubuntu alongside Windows.

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Thanks so much , this worked! –  user294273 Jun 17 '14 at 11:13
Glad it helped :-) –  Raphael Jun 17 '14 at 11:23
Tried this on Windows 8.1. Got the boot manager entry for Unetbootin but after selecting it, I get an error stating that Windows (?) cannot find required files. Booting Windows selecting the Windows 8.1 boot manager entry still works. –  Alexander Zeitler Nov 24 '14 at 23:41
Hey @AlexanderZeitler did you find a good solution for Win 8.1? :) –  twigmac Dec 20 '14 at 9:12

Instead of using WUBI, you can create an additional partition, or use an additional hard drive to write the liveCD image to, using unetbootin. Then you boot from this partition and continue the same way you would as if you'd be booting from a USB or CD.

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And how can i make an additional partition and use unetbootin to install ubuntu? –  user294273 Jun 17 '14 at 8:05
To answer your question of the additional partition, you can either use your disk management in Windows or use gparted. Beware though, resizing partitions always have severe risks of losing all data. Take your backups before you proceed! –  Jakke Jun 17 '14 at 8:35

I would suggest you to install Ubuntu in Virtual machine like VMPLAYER instead of dual booting. This helps to keep your boot process less messy and Ubuntu being fast works well in vmplayer.

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Even though this is a good solution to run both OS'es, you could also argue that you can install Ubuntu and run Windows in a VM. I usually suggest though that people dual-boot. It gives people a few more abilities from running in a VM and when people get tired of Windows, they can just clean up the partition and add it to their Ubuntu installation. When you're using virtual machines, you have to start from scratch again. Virtual Machines are a good way to test things, run web servers etc, but they're lacking in some areas. Especially if you're talking about a desktop system. –  Jakke Jun 17 '14 at 22:33
You make good points there @Jakke, but don't forget one advantage of using a VM is that you're able to run both OS'es simultaneously, which could be a big advantage for some users. –  Richard Fawcett Jun 18 '14 at 8:26

You can try using EasyBCD to add the ISO to the Windows Boot Manager. In some cases it may not work, but give it a try.

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I dont see an option to add the ISO to WBM, where can i find it? –  user294273 Jun 17 '14 at 8:12

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