How to configure booting from a flash drive, CD/DVD in BIOS and UEFI
Installing, reinstalling and restoring the operating system and the undertaking of some types of diagnostic work usually requires the use of special boot disks or flash drives. But the computer was able to boot from external media, in the settings of the underlying system I / o or otherwise BIOSa should establish an appropriate priority, that is just to indicate what needs to bootstrap the system.
The procedure for setting up booting from external media is quite simple, however, many novice users, it raises many questions. And this is understandable. First, to deal with the need for such a boot it is necessary infrequently, secondly, different models of computers procedure enter the BIOS and change the boot priority may differ in detail. Consider all in more detail.
At the moment there are two types of base system of input-output: the classic BIOS and the enhanced version of the UEFI. They both represent special program recorded on a chip on the motherboard and is used to configure and check components, hardware, and the transfer of management of the PC operating system. Unlike BIOS, UEFI, more Autonomous, it has a user friendly GUI with mouse support that allows you to integrate the driver, run the executable file format EFI, with no restrictions to work with GPT disks. In addition, the UEFI run much faster than a PC with a conventional BIOS.
How to get into the BIOS or UEFI
To get into the BIOS or UEFI, immediately after starting the computer, press and hold Del, F2, or Esc. Which button should be used to enter the BIOS/UEFI in your model desktop or laptop must be specified in the supplied user instructions. However, new computers with Windows 8.1 this can cause problems. If activated technology for quick boot, time to press Del or F2, you just do not have time. In this case, you must perform the following steps:
Open Settings -> Change PC settings -> Update and recovery -> Recovery -> advanced startup options, and then click the «Restart now». After reboot you will get the window «Select action». Click troubleshoot -> advanced options -> UEFI firmware Settings. The computer will reboot, and you can get straight into the UEFI.
Note: to determine which interface your computer uses is very simple. To do this, press Win + R and in the appeared window run the command msinfo32, and then in the system information to find the item «BIOS Mode». The old version of the system I / o will be marked as «Obsolete» and the new «UEFI».
Configuring boot from CD/DVD/USB drive in the BIOS
In most versions of the BIOS for setting the boot options section meets the Boot.
It contains a list of all connected computer devices. As hard disk and CD-ROM are integrated components in the list they will be present anyway, if you want to have a USB stick, it needs to be plugged into a USB port in advance before entering the BIOS. First on the list is the device from which you are currently booting the system. Using the arrow keys, you can change the boot priority, press F10 to apply the new settings.
In some BIOS versions the Boot partition may contain additional options, in particular the Boot Device Priority, Hard Disk Drives, and so on.
In the case of booting from the CD/DVD drive or a simple flash drive will be enough to move this device in the beginning of the list in Boot Device Priority and save the settings. If the flash drive is formatted as HDD, you first will need to log in Hard Disk Drives, choose in the list the first device (1st Drive), press Enter and the pop-up menu to specify the USB flash drive. Then the same must be done in the subsection Boot Device Priority. Save the settings by pressing F10. This is with regard to AMI Woow.
Configuring boot from DVD/pendrive in the BIOS AWARD or Phoenix somewhat different. Here in the main BIOS menu, you need to find the section Advanced BIOS Features, and it find the item First Boot Device, responsible for the prioritization for devices download. While on the First Boot Device, press Enter to open the menu (device list) select the CD-ROM or, if available, a USB flash drive. If no flash, switches to the first point Hard Disk Boot Priority, press Enter, choose in the list our stick, move it up the list. To save settings press twice Esc and then Save and Exit Setup, and confirm saving settings by pressing Y.
Configuring boot from CD/DVD/USB drive in UEFI
To set the boot priority in the UEFI is easier, and not only because you can use the mouse. In most interfaces UEFI in the bottom of the window there is a panel in the Boot Priority, which displays all connected devices to your computer, including USB flash drives and HDD removable disks. To install boot from a particular device, simply drag it with the mouse to the top of the panel and then when you exit the UEFI to save the new settings.
Also you can click «Exit/Advanced mode», go in the window on the Boot tab, under Boot Option Priorities list select «Boot Option #1» and set as bootable device USB flash drive, hard disk, CD-ROM or another computer connected to the device.
Save new settings when you exit the UEFI, or by pressing F10.