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
- press
ls
to 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.
- type
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...
Inplace of (hd0,gpt1)
type the address of first partition of usb disk e.g: (hd1,gpt1)
or (hd2,gpt1)
. According to output of ls
command.
We need the UUID shown in the above line
In place of 4099-DBD9, write UUID which you noted down earlier.
That's it, That should boot the usb drive.
Best Answer
From your booted Ubuntu system, open a terminal, then use the following commands :
Replacing
sdX
with the actual drive, which will probably besda
, but use disk utility to double check if you are unsure.