Regarding usb installation on usb drive

Question

I have installed Ubuntu 14.04 on my 16 gb usb drive.When i connect it to my laptop it boot properly and i can use,update and install any package on usb drive.But when i connect to other computer it cant boot.

What does mean «can't boot»? Does it show errors, black screen, or a BIOS message «No operating system found»? Also, note: USB sticks usually have reeealy slow IO, so to have a usable system you'd need to move /var/log to tmpfs, and disable atime. That's a bare minimum I recall, there's probably more could be done. — Hi-Angel, Jun 25 '16 at 19:56
Possible duplicate of How to install grub on usb flash drive? — Kristopher Ives, Sep 08 '19 at 09:54
Possible duplicate of How do I install Ubuntu to a USB key? (without using Startup Disk Creator) — sudodus, Sep 08 '19 at 10:10

score 0 · Answer 1 · answered Jun 25 '16 at 23:49

This is likely due to the fact the bootloader was installed to the hard drive of the system and not to the usb. Open a terminal, and type sudo fdisk -l (your USB flash drive should show up in the list if it is inserted). Now, type sudo grub-install /dev/<insert usb drive name here> to install it on your usb drive.

for example:

sudo grub-install /dev/ubuntuusb

If you labelled your usb device ubuntuusb. Be careful to select the right device or you could inadvertantly destroy another operating systems bootloader. Hope this helps.

Regarding usb installation on usb drive

1 Answers1