So 3 days ago I partitioned my hard drive to install Linux Mint 17.3 which was working fine, alongside windows 10 (updated from W8). But then I naively deleted the volume containing the Linux OS so that i could install Fedora 20. So I extracted the Fedora image file on my USB and rebooted the system with the USB attached. Upon booting, I got the following error message;

GNU GRUB version 2.02~beta2-9ubuntu1.6

Minimal BASH-like line editing is supported. For the first word, TAB lists possible command completions. Anywhere else TAB lists possible device or file completions.

grub>

Please I'm in great need of help. I have been trying to solve this problem for days without succeeding.

Using the ls command here are my partitions;
(hd0) (hd0,gpt6) (hd0,gpt5) (hd0,gpt4) (hd0,gpt3) (hd0,gpt2) (hd0,gpt1)


What can i do to boot my computer again? Thank you very much!

How did you put Fedora on the usb? Generally you would use specific software such as unetbootin or pendrivelinux to create a bootable Linux flash drive. If you extracted the Fedora iso and copied it to the flash drive I would not expect it to work. The message you are getting is Grub and I doubt that Fedora is using Grub on the iso, more likely syslinux so you are still probably booting from the hard drive. Did you have Mint and windows 10 installed using UEFI?

Well indeed I used unetbootin to create a bootable Linux Flash drive...just to test it out. From there I installed linux mint on an unallocated partition of my hard drive. Windows 10 is the original OS of my pc. So the error message appeared when I deleted the volume containing Linux, and tried to install Fedora 20 using the same procedure as I did for Linux. When i rebooted my pc I got that frustrating error message.

so what is the problem - that you can't boot windows anymore, or that you can't boot fedora from your live medium?

for the windows problem: if you don't install any linux, you need a windows rescue disk or something to fix it.

for the fedora problem: like yancek said, it looks like your machine isn't even booting from the medium. maybe you have to change something in the bios first (fedora is a little different from ubuntu there. i think ubuntu made some deal with microsoft that allows them to install to uefi machines without disabling safe mode, or something). or maybe you didn't create the bootable medium properly (look on fedora's web pages for instructions).

I have no idea as to whether it is a Windows or Linux problem. When I boot my machine, all I see is the dark screen with a grub> prompt (pls see attached file). What do you mean by "if I don't install any Linux"? How do I even configure the BIOS from that prompt? Maybe some sort of commands I could use . I'll check more Fedora web pages too.

Attached Thumbnails

 

The boot loader (grub) can not find some files located in /boot since Mint was deleted so instead of a menu it only displays the command prompt you see. I suspect that UNetbootin does not work with Fedora and would try Rawrite32 as described in the how to below.

https://fedoraproject.org/wiki/How_t...d_use_Live_USB

It's not uncommon to find problems with booting from usb, and often it's because of the way in which the iso has been written to the usb. I've found the most reliable method for "burning" the iso to the usb, to be with the dd command, which is outlined on that fedoraproject page referenced in post #6. Most other methods have risk, which is also mentioned on that page.

Ok so a very good friend of mine helped me solve this error (i guess it's easier when you actually have the pc). So the trick to this is to press esc as soon as you boot your pc (right before the Minimal BASH like ... error appears). This will take you to the STARTUP MENU with about 6 or 7 options. One of them is the boot manager. In my case, I selected the boot manager and it automatically booted windows. I'm a complete newbie at all of this so I cannot explain why what happened happen. If you understand why please explain. Thank you all for the help and concern!

In your initial post, you indicate the original system was windows 8 and that you then upgraded to windows 10. If your windows 8 was pre-installed then it was almost certainly installed using UEFI and you would need to install any other system using UEFI. You should also be able to change the boot priority in the BIOS to set the flash drive to first boot. Since this varies widely depending upon your hardware, there is really no way for anyone to tell you which option. The link below has some general information on dual booting using UEFI, some of which is general information and some specific to Ubuntu.

https://help.ubuntu.com/community/UEFI