You can start the installation or upgrade script by entering a boot option when you start the host.You can also create an installer ISO image that includes the installation script.When installing or trying the Live CD version of Ubuntu from a DVD, your computer has to be able to boot from that DVD.Usually this consists of just inserting the disk into your DVD drive and rebooting your computer. Value against “System Mode” will be your exact system model. To check the version of BIOS, power on the target system and tap repeatedly F1 or F2 for some models to go into BIOS setup. Connect the USB to the target system, power it on and keeping tapping F12 until you see the Boot menu. You can download Reimage Plus by If some reason you can’t boot into Windows and still want to update your system, then worry not, as you can do it by booting from the USB.Sometimes though this doesn't work, or just not as expected or planned. Check and make sure that the disk was burned properly.
I want to write this image to a usb and then boot from it, for updating bios. My system is E430, though the question is quite generic.With an installer ISO image, you can perform a scripted, unattended installation when you boot the resulting installer ISO image.See Create an Installer ISO Image with a Custom Installation or Upgrade Script.Like drivers and softwares, updates for BIOS are also released occasionally, but you should have a very good reason for updating your BIOS, also called flashing your BIOS. A menu will open, and select BIOS setup from it Use the above given method in Method 1 to check if newer version of the BIOS is available. If you have downloaded a simple “BIOS Update Utility for Windows” file, then next to “Create a bootable disk using” select Free DOS. After extraction, uncheck “Install BIOS Utility now.” option. Paste the previously copied file path in the address bar up above.Unless you are having a specific issue like compatibility while installing new hardware that is resolvable through BIOS update, only then you should update your BIOS. In the window, make sure System Summary is selected in the left pane. If in the results you can see “BIOS Update Bootable CD iso” whose BIOS version is newer than you already have then download it. Copy everything form the opened folder to the USB you just made bootable. Do not turn off your computer or laptop in any case during the updating process.