I am trying to secure erase my hard drive (1 TB) containing Endless OS 3 on my Acer laptop. Afterwards, I plan to install Windows 10 on my hard drive.
I have made a bootable USB (FAT32) using Rufus which has the software DBAN for erasing the hard drive. DBAN: https://dban.org/
At first, I inserted the bootable USB in a USB port and accessed the BIOS setup of my laptop. I went to the tab "Boot" but there was no option of selecting USB in the Boot Priority Order. The boot mode was UEFI and Secure boot was enabled.
Some more details:
In the "Main" tab in the BIOS setup, the values are:
GPT Partition Recovery --> [None]
Clear GPT Partition --> [None]
GPT Partition Record --> No Record
I used the software MobaLiveCD to check if the USB is bootable. I had success in verifying that the USB is bootable using MobaLiveCD.
After searching a lot on the internet, I read somewhere that I would have to change the BIOS mode to Legacy. After changing the boot mode to Legacy, the USB is visible in the Boot Priority Order.
But, as far as I know UEFI boot mode is recommended since it is more secure.
So the question, Is it safe to select boot mode as "Legacy" for erasing hard drive using DBAN? Will there be a problem of not being able to select UEFI again?
Edited by smarty301, 28 April 2018 - 12:06 PM.