Ubuntu – After installing Ubuntu Boot screen NO CABLE CONNECTION!

12.04bootinstallation

I was using Windows 7.

Later, using USB bootable Ubuntu I installed Ubuntu on newly created NEW PARTITION TABLE.

Ext4 format.
sda1 – Ubuntu /
sda2 – Swap base
sda3 – Logical drive /data
sd4 – Logical drive /backup

After installation is complete, when I remove my USB drive and restart the machine.

I see this error on Boot screen.

Intel UNDI PXE 2.0
…
Check cable connection!

After that screen, it shows me F12 menu, if I select any of them same thing again.

But if I try to install Ubuntu again,it works. But after installation same issue again.

I have now converted my HDD to MBR with Partition Wizard Bootable USB.
Problem persists, even after installing again.

My Laptop specs:

Lenovo G580
Intel i5
4GB RAM
500GB HDD
Intel 4000HD gfx

Best Answer

I solved it.

  1. Your harddrive needs to be in MBR format, also Disable UEFI on laptop bios. Since, 12.04 Grub 1.99 wont know how to write BOOT FILE in this mode.
  2. I formated my HDD from GPT to MBR with help of MiniTool Partition Wizard 7 Bootable USB.
  3. Start installation again, sda1 ext4 partition with 100GB. path: /
  4. Swap base: 4296MB
  5. Rest space formated with ext4, PATH: /home

If you face bcmwl-kernel-source issue preventing your wireless card from working do the following in terminal after successful installation. Plug in Ethernet wired connection and below in terminal;

wget http://de.archive.ubuntu.com/ubuntu/pool/restricted/b/bcmwl/bcmwl-kernel-source_6.20.155.1+bdcom-0ubuntu6_amd64.deb
sudo dpkg -i bcmwl*.deb