multi boot – Edit GRUB menu with Windows 10 – Super User.How to get windows 10 to show up in grub bootloader – General system – EndeavourOS

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Ask Ubuntu is a question and answer site for Ubuntu users and developers. It only takes a minute to sign up. Connect and share knowledge within a single location that is structured and easy to search. I recently got a computer from school. It came with Windows 8. I then installed another copy of Windows 8.

I then installed Ubuntu alongside both Windows 8 and However, there is no Windows 10 option. If I select Ubuntu, the computer boots into Ubuntu. However, if I select the Windows 8 option, I then get sent to the Windows bootloader, where it then gives me options to boot either Windows 8 or Windows However, by this point, the computer has already loaded the kernel and all. Apparently Microsoft misunderstood the concept of a boot loader and decided that that meant “boot practically the entire system before actually showing the bootloader”.

Typical Microsoft. Can anyone help with this? However, I then later deleted Windows 10 from the list of OSes in msconfig, and it seems to have stayed deleted. It’s as if GRUB simply doesn’t detect it. Also, I’ll put this in the question so that people see it – I have tried using boot-repair , however, it has NOT helped any. This solution provides a proper entry in the grub2 menu and chainloads directly into Windows 10 without reference to the BIOS.

It comes from this webpage so I claim no credit. It was such a relief to find a working solution. Note it’s not the Windows partition but the EFI one you need. By this command the system will automatically detect your Windows installations and add them to the GRUB list. As far as I understood your question you have two different Windows installations on one or more harddrives and you don’t want the Windows loader to get in the way or managing both Windows installations.

I remember that it was possible on legacy setups to directly boot the Windows kernel from Grub I may be wrong here but I haven’t been able to do this on UEFI setups. Having two independent Windows bootloader configurations that can be called from Grub independently should be very close to what you are looking for. UEFI allows coexistence of several bootloaders on the ESP and you can choose which one to boot if they have been registered in the UEFI firmware and the manufacturers firmware doesn’t do out of spec patronizing like only booting Windows.

The sad thing here is that only very few people can think about installing more than one independent version of Windows , Linux or one release of Ubuntu onto one computer or a harddrive that is used with several computers and boots a different installation of the same OS release on each computer. Most of this is already possible, but mechanisms in Windows and Ubuntu Fedora,… plainly choose to overwrite what is in their namespace under the false assumption that there can only be one.

You need to create a new EFI Partition for the later installed windows. After looking for a solution for a while, and also being lazy for not trying to spend another hour finding out what and where should I edit and update as it was futile I eventually installed Grub Customizer. Works wonders! For my specific setup I wanted to completely hide grub menu and automatically boot windows unless a hotkey was pressed to boot Ubuntu.

So in my specific case os-prober isn’t an option because the most important step in hiding the grub menu, which most answers I found neglect to mention, is to set the disable os-prober flag or the menu WILL be shown until os-prober completes. It took considerably longer than I had anticipated to get right because there are so many partial answers out there but most are version dependant and can lead you astray.

I spent a lot of time trying write my own grub menu entry trying use grub commands that didn’t exist like ntdlr. Another caveat is that the chainloader functions on my grub try to boot bios not efi and will not work. Im sure I was doing something wrong? So you can skip the fdisk and blkid steps most people mention. In terminal. Windows will be similar. I used –id windows-custom. Ubuntu Community Ask! Sign up to join this community. The best answers are voted up and rise to the top.

Stack Overflow for Teams — Start collaborating and sharing organizational knowledge. Create a free Team Why Teams? Learn more. Asked 6 years, 11 months ago. Modified 3 months ago. Viewed k times. Improve this question. Hitechcomputergeek Hitechcomputergeek 1, 2 2 gold badges 11 11 silver badges 18 18 bronze badges.

Recommending a tool that mostly addresses common problems in typical legacy boot setups, for untypical UEFI installations with special requirements is misleading and counter productive. LiveWireBT I am so sorry. I saw your answer. I’ve deleted my comment and stopped believing :P. I think I’m going to just delete the entire Windows 10 partition and move it to a VM, anyways. Honestly not sure why people are still upvoting this, as IMO it’s not a great question.

I believe that the Windows 10 install doesn’t have a proper bootloader or BCD or something, and is not actually capable of booting independently. Show 2 more comments. Sorted by: Reset to default. Highest score default Date modified newest first Date created oldest first. Sometimes os-prober is wrong. And finally update your grub config file: sudo update-grub Source. Improve this answer. Grub often fails to find the second partition if the first one on the disk already provides something bootable.

Not working. It says: “error: can’t find command ‘ntldr'”. This worked well for me. Show 1 more comment. I have followed that exact tutorial, and I get “Error: Partition not found” when i try to boot the entry. See more: askubuntu. Show 3 more comments. Sda6] commands in terminal of Ubuntu, probably it will solve your problem. Neel Shah Neel Shah 3 3 silver badges 7 7 bronze badges.

This didn’t work unfortunately. It does not seem to detect the Windows 10 partition. Actually I have had same problem with my system have windows 10 and ubuntu Which command solved it, the update-grub or grub-install? The thing is I have a separate boot partition on I think it actually is sda6.

Doing those two commands obviously didn’t solve it. Show 4 more comments. Note you have to be connected to the Internet when using boot-repair. Hitechcomputergeek if you need more help, let me know I’ll boot to windows and make you some screen-shots. I upvoted your answer because it fixed part of the problem, but since I still need to add Windows 10 to GRUB, I’m not accepting the answer yet. You can also use this tool in “test mode of ubuntu live cd mode ” iso where you can install, run and use it after connecting to internet or wife.

Show 12 more comments. I’m going to assume that this is a UEFI capable computer. You can use Windows’ dism to backup and restore partitions to a new partition table layout and use the command prompt from latest Windows installation media to reinstall the bootloader, more details on this in the next point. Since you have been recommended to try various other tools that don’t address your issue you have to revert these changes to a pristine condition, otherwise this will get more and more confusing.

Sorry about that. This answer does install an independent Windows boot loader configuration through bcdboot in a different location where Grub will call it.

For convenience I have chosen the Windows root partition. You will need to do this for every Windows installation, so that every Windows installation has its own and will only boot itself clean the individual Windows boot menus from other entries. Community Bot 1. I do not use Windows.

And then in UEFI create entires for each. If that works from UEFI then grub can chain to each directly. I think was focused too much on multi-harddrive scenarios in that case you should still be able tell bcdboot to boot Windows on hdd2 from ESP on hdd1, I think.

 
 

linux – How to start windows 10 through grub command line – Unix & Linux Stack Exchange.

 
On the Install Windows screen, select Repair your computer. On the Choose an option screen, select Troubleshoot>Advanced Options. Click on Startup Repair. After the repair is complete, check for status. If the issue still persists, then perform a Repair Upgrade using Windows 10 ISO by following the steps provided by Andre Da Costa in the. Dec 30,  · Solution: Switch on the pc and try to boot into Ubuntu OS normally. When at the desktop, launch the Linux command Terminal by pressing Ctrl+Alt+T. Type the given command in the terminal window, “ sudo update-grub”. Now press Enter Key. Type in your own sudo password when asked by the system, to execute your command. Jul 16,  · 2. Execute the command ls /boot/grub. 3. This would return the type of the filesystem if it is the partition that contains the bootloader. Else, this would return a message as “ unknown filesystem ”. 4. Set the root and prefix with the identified file system. 5. Load the module to the kernel by executing the command “ insmod normal ”.

 

boot – Add Windows 10 to GRUB OS list – Ask Ubuntu.

 
Jul 16,  · 2. Execute the command ls /boot/grub. 3. This would return the type of the filesystem if it is the partition that contains the bootloader. Else, this would return a message as “ unknown filesystem ”. 4. Set the root and prefix with the identified file system. 5. Load the module to the kernel by executing the command “ insmod normal ”. I used to have ubuntu installed in pc hard disk but for other purposes, I can have only windows installed. Now I have uninstalled all partitions having ext4 fs, so only ntfs and bootable fs (vfat32 I think) remain. But still, when I boot I see grub bootloader (GNU GRUB version – Minimal BASH-like line editing is supported. For the first word. Aug 31,  · GNU GRUB Introduction. GNU GRUB is a Multiboot boot loader. It was derived from GRUB, the GRand Unified Bootloader, which was originally designed and implemented by Erich Stefan Boleyn.. Briefly, a boot loader is the first software program that runs when a computer starts. It is responsible for loading and transferring control to the operating system .

 
 

Grub windows 10

 
 

Then re-run grub-mkconfig. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Start collaborating and sharing organizational knowledge. Create a free Team Why Teams? Learn more about Teams. Asked 5 months ago. Modified 5 months ago. Viewed 4k times. How do I restore Windows as a boot option? Improve this question. MiG 1, 1 1 gold badge 5 5 silver badges 18 18 bronze badges.

Robot Mr. Robot 3 1 1 silver badge 3 3 bronze badges. Add a comment. Sorted by: Reset to default. Highest score default Date modified newest first Date created oldest first. Improve this answer. Hello sir test, You helped me, thank you so much, I got the same error and I added that line you gave me and it works, you are a lifesaver thanks again. Sign up or log in Sign up using Google.

Windows will fail to detect these files and running chkdsk will most likely cause them to be deleted. This can lead to potential data-loss. When you have finished the Windows setup, boot into the Linux install environment where you can create and resize partitions for Linux while leaving the existing Windows partitions untouched. The Windows installation will create the EFI system partition which can be used by your Linux boot loader. You may use any multi-boot supporting BIOS boot loader. This section explains how to : install a linux bootloader on a partition instead of the MBR ; copy this bootloader to a partition readable by the windows bootloader ; use the windows bootloader to start said copy of the linux bootloader.

If you already have Windows installed, it will already have created some partitions on a GPT -formatted disk:. Using the Disk Management utility in Windows, check how the partitions are labelled and which type gets reported. This will help you understand which partitions are essential to Windows, and which others you might repurpose.

You can then proceed with partitioning , depending on your needs. Mind that an additional EFI system partition should not be created, as it may prevent Windows from booting. Simply mount the existing partition. Computers that come with newer versions of Windows often have Secure Boot enabled. You will need to take extra steps to either disable Secure Boot or to make your installation media compatible with secure boot see above and in the linked page.

In contrast to installing Windows before Linux, you will have to set aside a partition for Windows, say 40GB or larger, in advance. Or have some unpartitioned disk space, or create and resize partitions for Windows from within the Linux installation, before launching the Windows installation.

Windows will use the already existing EFI system partition. In contrast to what was stated earlier , it is unclear if a single partition for Windows, without the Windows Recovery Environment and without Microsoft Reserved Partition, will not do. Follows an outline, assuming Secure Boot is disabled in the firmware. The following assumes GRUB is used as a boot loader although the process is likely similar for other boot loaders and that Windows 10 will be installed on a GPT block device with an existing EFI system partition see the “System partition” section in the Microsoft documentation for more information.

Create with program gdisk on the block device the following three new partitions. See [5] for more precise partition sizes. Reboot the system into a Windows 10 installation media.

When prompted to install select the custom install option and install Windows on the Microsoft basic data partition created earlier. By convention and for ease of installation , Windows is usually installed on the first partition and installs its partition table and reference to its bootloader to the first sector of that partition.

If you accidentally install a bootloader like GRUB to the Windows partition or damage the boot record in some other way, you will need to use a utility to repair it. Using this method, you can fix the reference on the boot sector of the first partition to the bootloader file and fix the reference on the MBR to the first partition, respectively. However, this utility is only currently capable of writing new MBRs all OS’s and file systems supported and boot sectors a.

Most LiveCDs do not have this utility by default, so it will need to be installed first, or you can look at a rescue CD that does have it, such as Parted Magic. This is generally too small to fit everything you need. You can try different tools to resize this partition, but there are usually other partitions in the way, making it, at the very least, difficult. One option is to use the Arch install media to create a single EFI system partition of your preferred size before you install Windows on the drive.

Windows Setup will use the EFI system partition you made instead of creating its own. When it comes to pairing Bluetooth devices with both the Linux and Windows installation, both systems have the same MAC address, but will use different link keys generated during the pairing process. This results in the device being unable to connect to one installation, after it has been paired with the other. To allow a device to connect to either installation without re-pairing, follow Bluetooth Dual boot pairing.

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