I am using dual boot Ubuntu 16.04 and Windows 10. There is a problem which I cannot boot to my normal Windows, and am trying to recover it via USB stick. However, even if I change the boot order, the grub menu still displaying and I have no option to boot from USB.
Yes there is a way.
First make sure you have secure boot disabled from the firmware settings. (The menu that opens when you press f2 during boot)
Then follow the following steps:
- Press c when in grub menu to open command line
lsto list all partitions in all hard drives
my output was as follows:
grub>ls (hd0) (hd0,gpt1) (hd1) (hd1,gpt8) (hd1,gpt7) (hd1,gpt6) (hd1,gpt5) (hd1,gpt4) (hd1,gpt3) (hd1,gpt2) (hd1,gpt1)
This clearly shows that my usb drive is hd0.
ls (hd0,gpt1)to confirm:
Output is as follows:
grub>ls (hd0,gpt1) Partition hd0,gpt1: Filesystem type fat - Label `CES_X64FREV`, UUID 4099-DBD9 Partition start-512 Sectors...
(hd0,gpt1)type the address of first partition of usb disk e.g:
(hd2,gpt1). According to output of
We need the UUID shown in the above line
- Note the UUID of you usb drive.
Type the following commands one by one.
insmod part_gpt insmod fat insmod search_fs_uuid insmod chain search --fs-uuid --set=root 409-DBD9
In place of 4099-DBD9, write UUID which you noted down earlier.
Now we select the efi file to boot from. Type the following:
That's it, That should boot the usb drive.