Enable verbose startup messages in Debian 8.0 (Jessie)

By default Debain no longer displays the any output while the system is booting, however it can be quite useful to see what is going on particularly when trying to debug a system that isn’t behaving.

Fortunately it is quite easy to get these messages back.

You need to edit ‘/etc/default/grub’ at root and remove the “quiet” option from the GRUB command line.

# nano /etc/default/grub

# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
#   info -f grub -n 'Simple configuration'

GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`

Note – It is just a personal preference but when making this sort of change I prefer to comment out the original entry and create a new one.

The you need to update grub.

# update-grub
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.16.0-4-amd64
Found initrd image: /boot/initrd.img-3.16.0-4-amd64

You should see the boot messages on the console next time the system starts up.

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