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Old 11-13-2016, 07:24 AM   #31
Registered: Dec 2014
Location: UK
Distribution: Debian 8 Cinnamon/Xfce/gnome classic Debian live usb
Posts: 508

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Originally Posted by goumba View Post
the Debian team has taken care of the chroot step for you. Boot your Debian installer CD/flash drive and select Rescue mode from the menu. It will then allow you to choose a device as the root device. Do so, and it will drop you into a chrooted environment.
I have done this and it has worked. Thank you very much!

The debian installer indeed has a rescue mode.
On the rescue mode it actually offers an option to install GRUB onto a device. Thus chroot is not required.
Unfortunately, it offered to install to sdb or sdg and I couldn't tell which usb was the target OS and which was the debian installer I was using. Since sdg had 2 partitions and sdb had only one - I guessed (rightly) sdb was the target OS.

On reboot, the usb loaded debian. So GRUB was successfully installed onto the MBR of the usb.
Clearly then, if I use debian installer to install an OS onto usb, then GRUB will fail to install onto the MBR of the device.
But I can then use 'rescue mode' on debian installer and install GRUB again onto the usb - and this time it will work.

Thank you again for your help!


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