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Old 10-15-2015, 09:11 PM   #1
dantopa
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Can't boot from usb, bios key doesn't work


Hello, I have a computer with Linux Mint 17.2 installed. Now I want to install Windows 10 in a second partition, but the problem is, I can't access the bios to change the boot order, I don't know why, I have tried everything, but is impossible, something is failing. So, I can't boot from usb, or even boot from cd to install windows. The only weapons I have is:
- Linux Mint installed with grub2.
- Refind boot manager installed, so I can have multiple os to boot in uefi mode.
- Windows installed on a virtual machine, so I can do some windows things from here.

Please, I really need help with this, I don't found a solution.

Appreciate your help
 
Old 10-15-2015, 09:32 PM   #2
vincix
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Some motherboards have a quick boot menu that you can access, by pressing, for instance, F9 or F10. On Intel MB I think it's F10, at least this is what it's been in the last years, if I'm not mistaken. You should try this too.

Anyway, if it doesn't work, then write your Windows 10 ISO on the usb stick, then create a new entry in Grub2 that points to that usb stick and point to it. Here's a link: https://help.ubuntu.com/community/Gr...OBoot/Examples

Now, the problem is that, if you can't change the boot order, then I'm not sure how you'd be able to reinstall grub2 to get Linux Mint back after installing windows 10 (which will overwrite the MBR). Maybe by installing a Windows software that accesses your BIOS directly from Windows, if you say it supports UEFI. You should check if your laptop (I suppose) supports that.

Last edited by vincix; 10-15-2015 at 09:33 PM.
 
Old 10-15-2015, 09:43 PM   #3
pholland
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Welcome to the forum!

It might help to post what computer you are using. Someone with the same model might know what is needed.

The very first screen when the computer is turned on usually has something about which key to press to enter the bios. It may be in the top left or top right corner. Or it may be in a list near the bottom of the screen. I have one computer that uses the F2 function key and another that uses the F11 or F12 key. More than once I have had to restart the computer several times because the screen gets erased before I have found the right information. And just pressing and releasing the correct key is insufficient. Holding the key down until the next screen is fully up seems required.

I upgraded? to Windows 10 on a desktop that dual booted Win 8.1 and linux mint. My experience is that mint plays nicely with an installed version of Windows. But installing Windows overwrites the master boot record at the least and may do other unfriendly things to a linux installation.

Good luck.
 
Old 10-15-2015, 09:44 PM   #4
dantopa
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Quote:
Originally Posted by vincix View Post
Some motherboards have a quick boot menu that you can access, by pressing, for instance, F9 or F10. On Intel MB I think it's F10, at least this is what it's been in the last years, if I'm not mistaken. You should try this too.

Anyway, if it doesn't work, then write your Windows 10 ISO on the usb stick, then create a new entry in Grub2 that points to that usb stick and point to it. Here's a link: https://help.ubuntu.com/community/Gr...OBoot/Examples

Now, the problem is that, if you can't change the boot order, then I'm not sure how you'd be able to reinstall grub2 to get Linux Mint back after installing windows 10 (which will overwrite the MBR). Maybe by installing a Windows software that accesses your BIOS directly from Windows, if you say it supports UEFI. You should check if your laptop (I suppose) supports that.
Ok thanks now I will try that, because the key is not working on startup. Then maybe, I can access to linux again with refind, because I have refind installed, it's a boot manager. I can access to refind pressing a key. Otherwise, I will use Windows to update the bios, because I can update the bios from windows only (I supouse). And I think the f2 key will be working again after that.

Thanks for the response, I'll comment later how it goes!
 
Old 10-15-2015, 09:57 PM   #5
dantopa
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Quote:
Originally Posted by pholland View Post
Welcome to the forum!

It might help to post what computer you are using. Someone with the same model might know what is needed.

The very first screen when the computer is turned on usually has something about which key to press to enter the bios. It may be in the top left or top right corner. Or it may be in a list near the bottom of the screen. I have one computer that uses the F2 function key and another that uses the F11 or F12 key. More than once I have had to restart the computer several times because the screen gets erased before I have found the right information. And just pressing and releasing the correct key is insufficient. Holding the key down until the next screen is fully up seems required.

I upgraded? to Windows 10 on a desktop that dual booted Win 8.1 and linux mint. My experience is that mint plays nicely with an installed version of Windows. But installing Windows overwrites the master boot record at the least and may do other unfriendly things to a linux installation.

Good luck.

I have a Samsung notebook, and the key is f2 but not working. I will try to create a menu entry for the windows usb stick, but I don't see how to do it for Windows in this link https://help.ubuntu.com/community/Gr...OBoot/Examples, only for linux.

If you know how to add the Windows usb entry in grub please tell me, thanks!

Last edited by dantopa; 10-15-2015 at 09:58 PM.
 
Old 10-15-2015, 11:35 PM   #6
yancek
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The link you have in your last post is to the Ubuntu site explaining how to directly boot an iso file on a drive. That won't work for windows. I used the following entry to boot an extracted windows 10 copied to a flash drive.

Quote:
menuentry "Start Windows Installation" {
insmod ntfs
search --no-floppy --fs-uuid 459532DE5D8D5C3A --set root
chainloader +1
boot
}
I don't know how you created your windows usb and I don't use EFI so I'm not sure if that will matter. You will need to replace the uuid shown above with whatever it is for the flash drive; sudo blkid will get it.
 
Old 10-17-2015, 05:07 PM   #7
dantopa
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Quote:
Originally Posted by yancek View Post
The link you have in your last post is to the Ubuntu site explaining how to directly boot an iso file on a drive. That won't work for windows. I used the following entry to boot an extracted windows 10 copied to a flash drive.



I don't know how you created your windows usb and I don't use EFI so I'm not sure if that will matter. You will need to replace the uuid shown above with whatever it is for the flash drive; sudo blkid will get it.
Problem solved!!! I'm on Windows right now, I updated the bios too and now all is working perfectly again. I followed this guide: http://onetransistor.blogspot.com.ar...usb-linux.html . It's really awesome, Windows installer booting from grub on uefi.

Thanks for your support guys, it was very helpful to me to know where to start.

Cheers!
 
  


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