However, if the issue is still there, you might as well jump to method 3 to try third-party freeware to rebuild the disk MBR. Then, enter the following commands into Command Prompt one by one to rebuild MBR.Īfter executing the commands above, you should be able to successfully boot into your computer. If it doesn’t work, you need to go with the option “Command Prompt”.ĥ. You can also try the option of “Automatic Repair”.Ĥ. Hit the tab of “Troubleshoot" and select “System Restore” to restore it to the restore point you set up before.ģ.
#Grub on usb windows windows 10
Boot into Windows 10 from the installation media and select the option “Repair your computer”.Ģ. First, you need a Windows 10 installation CD/DVD or bootable USB drive.ġ. This part of the content is going to outline the method on a Windows 10 system, but it’s very similar for Windows 7 and 8 too. If you encounter the issue, don’t be panic for there are several solutions to it. What to do if grub rescue file system is unknown? After you delete the partition or OS, the MBR still has old boot sector values for either operating system and booting up may give you an error, for example, “grub rescue unknown file system”.
#Grub on usb windows how to
When you’re setting up such a system, every partition has an MBR, which has important data on how to boot your operating systems. However, you deleted the Linux partition. For example, this could be a PC where you were dual booting between Windows and Linux. The reason for this error can be that you performed abnormal deletion of a partition where second/dual OS is installed.
Question from Thomas The cause of “grub rescue unknown file system” When I closed my laptop and turned it on, grub rescue error appeared on the screen.
Yesterday, while working on my Windows partition, I decided to create a new partition D from the C. On my laptop, I have 2 operation systems: Kali Linux and Windows 10.
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