Hi Carlos,

Secure Boot is supported only in Windows 8. You will need to change the boot priority to USB HardDisk in the BIOS Boot menu each time when you try to boot Linux from the external drive.

Restart the laptop and start tapping F2 at the Dell logo to load the BIOS page. Navigate to “Boot” section and change the "Select 1st Boot Priority" to "USB HardDisk."

Please let me know if you need further assistance.

Hi

So, I've already had did: "Restart the laptop and start tapping F2 at the Dell logo to load the BIOS page. Navigate to “Boot” section and change the "Select 1st Boot Priority" to "USB HardDisk." and not functioned.

I've updated  the BIOS to the latest version ( A10 ) and the problem continues.

The problem occurs when i boot from the USB HD and the DELL logo after the screem goes black with blinking cursor.

If i put this same external drive( with Linux ) on another computer ( PC ), it's run normally.

I don't know what happens. Do you have any idea ?

Thank you.

Hi Carlos,

Thank you for your reply and for providing an update on the status. I suggest you to connect the external hard drive to the eSATA/USB port that is located between the VGA and HDMI ports on the left chassis and let me know if the laptop boots from it.

Hi

I had connect this port , but i tried again 4-minutes left on and the same screen appears.

I created a pen drive bootable and anywhere ports occurs : "Boot error". If i connect in other PC this pen drive works normally.

Thank you