All About Boot Sequence & How to Manage It

Most of the time people just wondering about, What actually Boot is and why do we need to configure the Boot Order when every time we wanted to start something Bootable like the installed Operating System, OS Setup, Bootable Utility Tools or maybe a Live Operating System.

So, lets see what actually it is;

Mainly in technical language, the word called Boot means Startup. And you know, when every time when you push the Power Button of your computer system, you just only short the circuit which turns ON the Power Supply and it starts to supply the power output to all of your computer or laptop’s hardware components;

After that, you’ll be able to see the first Logo & POST (Power-On Self-Test) Screen appears on the display and when it gets completed, your BIOS will start to boot that bootable device which is listed first in the boot options, and right after some couple of more seconds you’ll see that your Operating System will start to load.

Booting is a just process which takes place in between the ‘Powering ON’ and ‘the loading of an Operating System’ of your computer, and that’s the part where the value of Boot Sequence come in.




Boot Sequence is just a BIOS internal configuration which manages, to whom to boot first, or to boot last. And the best part is, you can manage it on your own, or otherwise your computer BIOS will automatically configure any available bootable device on top to boot it first.

If the configuration is wrong, most of the boot related error can be seen on the system’s startup. The most famous one is Error – Reboot and Select Proper Boot Device.

By changing the Boot Sequence in BIOS, you can actually prevent your computer from booting the newly connected device other than the OS drive. I’m only suggesting this because most of the people just forget to unplug the used External USB Drive (whatever it’s the flash drive or an external HDD), which lead to some kind of boot problem on the next startup.

If you configure the OS drive correctly in the ‘Boot Order setting’ then after your next PC’s POST, your BIOS will be only focusing on that drive what you’ve selected on the top of the list.

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Normally, if your computer is working perfectly then you really don’t need to take care of this computer setting. But in case, if you are having some problem with your OS, like some booting issue, or maybe you need to install a new OS from your Flash Drive, or you need to run some bootable software by using a Bootable CD, DVD, or USB Drive;

Then this little configuration is the one which you cant really ignore because every plugged bootable device of your computer will be only going to boot according to this setting.

So, Now Let’s See How To Change/Manage The Boot Sequence; 🤔setting

If you’re going to make some changes in your computer boot sequence setting then the first thing what you’ll need to do is to get into your Computer’s BIOS Setup. For most people, getting into the setup can be tricky sometimes because it needs a particular key to be pressed on the systems startup to get into the main BIOS Menu.

In case if you only wanted to change the Boot Setting for the OS Installation purpose, which only requires you to boot once where the rest of things will be done by the setup, or maybe you need to use some Bootable Utility Tool for only a couple of times;

Then change the boot order for the Disc/USB and change it back for the OS drive will only going to waste your time or nothing else.

There is one more option in BIOS which can quickly & directly boot any Bootable Storage Device, whatever it’s your Flash Drive or a CD, by just selecting that device in the Boot Menu and computer will boot that storage device right-away.

Boot Menu will only allow you to boot the bootable device for once and skip the actual saved boot configuration.

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So, let’s back to the topic;

Step 1 – Entering In BIOS

In order to enter into your Computer’s BIOS, first, you’ll need to press the designated keyboard key (which most of the times youll see on the first screen of your computer). Pressing the BIOS key will give you the direct access to the BIOS Setup page.

Just follow the steps given below:

  • Start your Desktop or Laptop, or in case if it’s already Powered ON, then you’ll need to shut it down and start it again.
  • After that, you’ll need to take a look at your PC’s ‘First Boot Screen’ which normally contains the manufacture’s Logo, and make your eyes search for the default designated BIOS Key.
  • After finding the BIOS key, now you’ll need to tap it again and again until the BIOS menu comes up. If you skip the POST screen, then you’ll again need to restart your computer to tap the key again.
  • The BIOS Entering key is predefined by the manufacturer and normally those are Esc, F1, F2 or a Del key. In case, if your monitor screen shows nothing besides the Manufactures’ Logo, then the best thing what now you can do is try to press all the Function Keys one by one from Esc to F12, until you find the correct access. While trying for a single key, make sure you press it rapidly or otherwise you can’t confirm it’s the actual designated key or not.

BIOS First Logo Screen

And this is how a BIOS Setup Menu looks like:

BIOS MENU INTERFACE NORMAL VS. UEFI

Note 1 All BIOS Setup Menus are a bit different according to its brand or version, so your BIOS may look like this or maybe its possible that it will look completely different.
Note 2 Old BIOS Setup doesnt support mouse input, but it does if you have a UEFI BIOS pre-installed in your motherboard or otherwise youll have to make changes by only using your computers keyboard.

Step 2 – Finding The Boot Setting

Now in your BIOS Menu, you can see lots of different setting and information about your system, but in order to change the startup sequence, you’ll need to find the Boot Setting’ options.

Most of the times you will easily find this setting, but what to do if you wont? Then the other easy ways what you can do is to search the boot option under these particular settings tabs called;

Advance BIOS Features, Boot Setting, Boot Device Priority or Bios Features.

And here are some examples shown in the image given below:

BOOT SEQUENCE OR BOOT ORDER SETTING

Step 3 – Change The Boot Order

To change the boot order, first, you’ll need to understand that what actually you’ll need to put it on the first boot device. I’m only saying this because if you saved your boot sequence wrong, then it’s quite possible that the bootable storage device which you wanted to get boot on your computer, will not boot at all.

This is how Boot Setting looks in BIOS Menu:

So, what we need to put on first, second and third Boot priority?

Boot configuration at least need two to five boot listing so it can skip and boot to the next device if the bootable files aren’t available on the first one, and that’s’ the reason what you can see why this setting called boot sequence or boot order.

So, if you wanted to boot your flash drive then changing the “First boot device” or Boot option #1” to the ‘Removal Devices can help you with that. Or otherwise if you just wanted to make your computer to boot normally and load the OS, then you’ll only need to change the “First boot device” to the internal Hard Drive/SSD of your computer, and make sure you don’t get confused with the external one.

And of course, yes, you can give any storage or Optical Drive the first boot priority so it can boot easily when every time you start your computer.

Some BIOS will show the pop-up menu to select a particular bootable device to designate the configuration, but on the other hands, some of them allow you to move through menus by using the + and “–” keys to move the devices configuration location, up and down.

And just like I said, in the latest UEFI BIOS you can do this with the help of your computer’s mouse too. But when you’re finished with adjusting your settings, just make sure save the configure and then exit or otherwise it won’t save any changes what you’ve made recently.

BIOS Save Menu

#What To Do, If You Having Some Problem While Booting Something;😱

  • Boot setting wont save changes: If you’re having this problem then there is a possibility that your BIOS CMOS Battery is Dead and that’s’ the reason why your BIOS Chip won’t be able to save the setting. To confirm that, make sure the system’s Clock is running correctly.

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  • Flash Drive isnt able to boot In that case, it’s possible that the software you use to make your drive bootable isn’t working with the version of BIOS what your computer has. You can some different boot transfer software like Rufus, Yumi or WinToFlash.

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In case, if your flash drive still isn’t able to boot by changing the first boot device to removable storage. Then it’s possible that your BIOS thinks that the pendrive is an external hard drive and because of that, now you’ll need to put the hard drive on the first boot device priority and then change the other setting in different BIOS option called Hard Drive Priority, as shown in the picture given below:

Hard Drive Priority in BIOS

  • If HDD/SSD/Optical Drive Not Found in BIOS – In that case, you’ll need to change the SATA/IDE cable of that drive which is not working. The laptop doesn’t use any SATA or IDE Cable where you’ll need to use some other working drive at the place old one, to find it’s the faulty drive or the connector of your laptop’s motherboard.

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“And that’s all for now, thanks for sticking with the article, and you know it will always good to let me know about the tutorial, in the comments down below.” 🙂


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