I was trying to install Debian on my new laptop: a Lenovo Y50 64bit running Windows 8. I got together with a friend and installed Debian in his computer first and had no problems. However I've tried to install Debian several times using the AMD64 KDE and netinst versions and accomplished nothing.

First try: installed the KDE version. Grub would let me choose which operating system I wanted, but when I selected Debian it would only load the command line.

Second try: Reinstalled but this time with the netinst version. I only got a black screen where I could type but nothing else.

Third Try. Tried the netinst again. This time after making the partitions I got a message that said that no EFI partition was found. I ignored the message and this time it wouldn't even load Grub. only a command like interface with grub rescue or something.

Not once did I get an error during the installation. What am I doing wrong?

I assume the problem is I need to make an EFI partition or something like that. So why is it that during the first installations I didn't ask me for that. And if that is indeed the problem, How can I solve it?


So the installation failed again... as predicted. Here you can find the Disk Management picture. http://postimg.org/image/433cpfkjz/

Please somebody help me. I keep getting the grub rescue thing. secure boot is disabled and legacy support is set first.

  • Enter UEFI configuration (aka BIOS, but it's not a correct name because UEFIs replaced BIOSes) and disable CSM and secure boot. Then reinstall.
    – gronostaj
    Aug 20, 2014 at 19:44
  • secure boot is disabled. what is CSM?
    – Girauder
    Aug 20, 2014 at 19:45
  • CSM. Are you installing Debian to replace Windows or to have them both? In the former case, are you going to ever return to Windows?
    – gronostaj
    Aug 20, 2014 at 19:48
  • I would like to dual boot. especially since I am just a beginner I would still like to keep Windows and use it constantly.
    – Girauder
    Aug 20, 2014 at 19:50
  • If I understand the CSM correctly. I should change the boot mode from UEFI to Legacy support?
    – Girauder
    Aug 20, 2014 at 19:54

1 Answer 1


I did the same, first, change to legacy bios boot, second wipe the HDD and then convert from GPT to MBR (using @ctive partition manager part of active boot disk) then install win7 and Debian 7.6 as usual.

  • Now, the problem are the drivers, the wired LAN works and the video but without hardware acceleration... Aug 25, 2014 at 13:04

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