Reboot And Select Proper Boot Device Uefi Bios
Terry Chavarin
This Ubuntu boot-repair tool can repair frequent boot issues you may encounter in Ubuntu like when you can't boot Ubuntu after installing Ubuntu. Or you can't boot Windows after installing a Linux distribution, or when you can't boot Ubuntu after installing Windows, or when GRUB is not displayed anymore, or some software update or hardware upgrade breaks GRUB, etc.
Four options. Either boot into the LiveCD and download the program and apply it to your boot loader, or create a Ubuntu OS install boot disk with boot-repair, or boot into a barebones boot-repair liveCD, or a boot repair USB stick.
So either pitch in and help the developers figure out why that version of Ubuntu isn't working with your hardware, or troubleshoot what is wrong by learning about how the boot process works, or try a different version of Ubuntu on a different hardware.
I had this issue today. For me the fix was to hit a different function key than the normal bios menu. This made a menu pop up that allowed me to select a device to boot from (this is also in BIOS, but this menu was a different thing that only allowed you to do that one thing). Then I selected the device "uefi: Ubuntu." This device was already selected as the first boot priority in my BIOS, but for some reason it didn't work until I used this second menu. I had used this menu before to boot from USB to install Ubuntu, so I'm thinking maybe this menu overrides what's in BIOS and it's persistent? I have no idea, but problem solved.
When you start your computer, you may encounter this error: reboot and select proper boot device. This error indicates that the computer or laptop is unable to find a hard drive with Windows on it. Restarting your computer can't solve the problem, but how can you fix it then.
This issue has troubled a huge number of Windows users. Luckily, you can solve this issue with this post. Before you are going to take action, figure out the causes for the "Reboot and Select Proper Boot Device" error.
With knowing the exact cause for this error, you could take these measures accordingly. I have listed multiple solutions for this problem. We start with the most common solutions, just follow the post and try the steps.
Generally, you don't need to change anything in your BIOS because your BIOS should be configured automatically. However, if you have replaced the old system disk with a new one, you need to set your boot priority drive. Follow the steps below to select the proper boot device.
So we have checked everything, it's time to start your computer and open the BIOS. Then, run Hard Drive self-test. If you don't have a Hard Drive self-test in the BIOS, you can run a hard drive test with EaseUS by creating a WinPE disk.
However, if your ASUS, Dell, Acer, Lenovo, etc. computer running Windows 10/8/7 still has the "Reboot and select proper boot device" error, you should try the next attempt. EaseUS Partition Master has the Rebuild MBR feature that can fix the master boot code problem.
If you still receive this error - reboot and select proper boot device, you can try to fresh install Windows 10 to your HDD or SSD. Reinstalling Windows will erase all files saved on the boot partition, you'd better back up your data without booting Windows.
Hope you have fixed the reboot and select the proper boot device error with the steps above. Remember, if you don't see your hard drive in your BIOS, you can check the connection first. Then, check if the hard drive itself is simply damaged or corrupt. You can also repair a corrupted hard drive if you have tried all the solutions above.
MiniTool OEM program enable partners like hardware / software vendors and relative technical service providers to embed MiniTool software with their own products to add value to their products or services and expand their market.
Recently, some users have reported to us that the computer asks them to insert proper boot media when starting Windows. An error message shows on the screen, saying Reboot and Select proper Boot device or Insert Boot Media in selected Boot device and press a key.
Since it refers to a BIOS error, this means you can get the error message on any computer running on Windows 10/8/7 and it always happens on ASUS, Toshiba, Acer, Gigabyte laptop. In most cases, you may find Windows startup is still blocked here even if you reboot the computer.
If the disk you want to start Windows 10/8/7 from is not the first boot device, please set it as the first boot device. If the Windows installation medium does not enjoy boot priority, please set CD-ROM or removable device as the first boot device.
However, if it is not UEFI but Legacy, you are using Legacy BIOS boot mode. In addition, sometimes it is CMS (compatibility Support Mode), which supports both UEFI and Legacy BIOS. In addition, sometimes it is CMS (compatibility Support Mode), which supports both UEFI and Legacy BIOS.
Generally, the partition storing Windows boot files should be set active, and it is always the system reserved partition. However, if you install Windows 10/8/7 to an appointed partition, there will be no system reserved partition, and your C drive should be set active.
Prepare a Windows repair disc and boot the ASUS, Acer, Toshiba or Gigabyte PC from the disc. Then, go to the following interface and click Repair your computer to enter the Windows Recovery Environment.
As we know, reinstalling Windows will erase all files saved on the boot partition (it is always the drive C). So, what if there are important files saved in this drive? We believe all of you would want to transfer them out at first, but how to do the transferring when Windows is unbootable?
Case 1: the user tried lots of methods found from the internet, including change boot order, rebuild MBR, set BIOS to defaults, and fix boot, but the error still exists. Then, he took out battery of COMS and then put it back. After that, the error is fixed magically.
A boot device contains the information that a computer needs before it can launch an OS. It is an actual device, meaning that it is hardware rather than software. Because of it and the boot files installed on it, your PC can launch the Windows OS for your use. With the distinct operational characteristics of this piece of hardware and the software associated with it, boot devices are special. There is no alternative for them on Windows or Mac or any other existing OS.
Faulty drives and damaged or corrupted boot files are the reasons Windows prompts you to reboot and select proper boot device or insert boot media in selected boot device and press a key. Sometimes, you really need just to perform these actions, and the problem would be fixed. Other times, you need to be a bit more technical. Other times, you need to be a bit more technical.
It could also be that you are booting from an external drive. In this case, you have either connected your PC to the drive via a cable or through an online connection. In either case, you can get rid of the reboot and select proper boot device or insert boot media in selected boot device and press a key error by repairing the connections.
The last thing you can do to fix the reboot and select proper boot device errors and others like it is to reinstall your Windows OS. You should only do this when repairing or refreshing the OS does not work. On Windows 10 or 11, you can refresh your OS by doing the following:
Whichever option you choose, you would not have to deal with Windows reboot and select proper boot device errors. But Windows would uninstall your apps, so you would also need to reinstall them after the refresh or reset process.
Fixing booting errors in Windows is not difficult. Boot devices and files are important. Common boot device errors only occur when there is a problem with these devices and files. To prevent these problems from cropping up, make sure to run hardware and software diagnostic tests frequently. You can also use Auslogics Essential Tools software pack to keep your Windows computer(s) healthy.
My SSD worked fine for months, and is plugged in to the motherboard through separate power and data cables.Recently I plugged out the data cable with the power cable still plugged in and booted the BIOS. After replacing the data cable, for any subsequent boot attempts I get the error in the title: "Reboot and select proper boot device".
I am running an old Acer Veriton M2640G.
I've got windows installed, then I partitioned 40gb and installed Garuda via USB (used the rufus imager)
I had to disable secure boot in bios to get there.
After a restart and f12 - I see the only boot option is the windows boot manager. I then go into advance startup for windows, and let it restart there - I see the Garuda Linux partition and select it (still in windows environment) but when it boots, I get a message that says "Selected boot device disabled in Bios"
So travel to bios, disable fast start up, disable CSM to go to legacy. Now I see that the boot option is no longer 'Windows boot manager' but The whole hard drive (excluding partitions) I select it and get the message to restart and select the correct boot device.
Hello,
How do I get the Proliant DR360 G4 to boot the from CD rom drive? I have a server crash and it is going into a loop with the blue screen of death. I rebooted multiple times and finally saw a prompt to choose the last known profile or default and tried both but it rebooted regardless of which one I chose from.
If I want to reinstall Windows again, do I need a driver for the system to see the storage drive? The driver I need is Windows 2008 R2 Standard. Do I need to set up the array again? And how do I get it to boot from CD?
>> Power on or restart the server.
>> During the boot process, you'll see a prompt to enter the BIOS/UEFI setup. This is typically achieved by pressing a key such as F2, F9, F10, or Del. The exact key may vary, so check your server documentation or look for on-screen prompts during boot.
>> Once in the BIOS/UEFI setup, navigate to the "Boot" or "Boot Order" section.
>> Set the CD-ROM drive as the first boot device. Use the appropriate key to move it to the top of the boot order list.
>> Save your changes and exit. This action is usually done by selecting the "Save & Exit" option.