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Linux - Laptop and Netbook Having a problem installing or configuring Linux on your laptop? Need help running Linux on your netbook? This forum is for you. This forum is for any topics relating to Linux and either traditional laptops or netbooks (such as the Asus EEE PC, Everex CloudBook or MSI Wind).

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Old 11-03-2017, 05:17 AM   #1
stockton
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Ubuntu to Debian UEFI Lenovo E50


I wish to change my installed Linux from Ubuntu 17.04 to current Debian.
When I look in the UEFI I cannot see an option to boot from CD whereas initially I installed Ubuntu from CD. See the attached image.
Please tell me how to fix.
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Old 11-04-2017, 10:47 AM   #2
beachboy2
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stockton,

Insert the Debian CD/DVD and switch off the laptop.

Then immediately after switching on again, tap the F12 key repeatedly.

This should give you the option to select CD/DVD in the Boot Manager.

Failing that, burn the Debian ISO image to a USB drive and boot from that.
 
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Old 11-04-2017, 11:57 AM   #3
Shadow_7
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On my newest laptop I had to delete all UEFI keys to be able to boot non-UEFI debian in legacy mode. Ubuntu is of course signed by microsoft keys and works with UEFI. As is Fedora.
 
Old 11-04-2017, 12:34 PM   #4
stockton
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Shadow 7 How does one go about deleting UEFI keys and what effect will this have on the Windows system on the same laptop.
 
Old 11-04-2017, 02:10 PM   #5
Shadow_7
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In my case I don't care about the windows system. I've never booted it, and hopefully never will. But right below the option is a system restore / factory defaults option. Which I assume is the undo. But it's not a risk in my case, since it's just a drive in my use case. It's on the same page as legacy/csm and secure boot for my HP. But way down the list.
 
Old 11-07-2017, 06:38 AM   #6
aragorn2101
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Quote:
Originally Posted by stockton View Post
I wish to change my installed Linux from Ubuntu 17.04 to current Debian.
When I look in the UEFI I cannot see an option to boot from CD whereas initially I installed Ubuntu from CD. ...
Hi,

Just make sure Secure Boot is off, then find the Function key which brings up the boot options at start. This should give you option between the EFI bootloaders installed on the disk or USB or CD/DVD.

About the UEFI keys, it is not necessary to delete them. Usually, by disabling Secure Boot the system will stop using the keys and Windows will continue to work fine. So no need to delete them.
 
  


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