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I'm new using Ubuntu, I download Ubuntu in dual boot, I made the partition as you said in the forum. I download Ubuntu 16.04 in my flashdrive and when I wanted to restart the laptop it restarted in Windows. I changed disabled the secure boot and enable legacy, this allow me to boot in the partition destinated to Ubuntu. In the Ubuntu desktop, you have two disks: one you find windows files and in the other one 31 GB I supposed is the Ubuntu partition. I really would like have the dual boot, please what can I do. I tried also to:

sudo update-grub:
##/usr/sbin/grub-probe:error:failed to get canonical path of /cow.

I don't know what to do? I need an orientation please.

As you ask me, I supposed that is my summary report, so long, sorry, I tried to resume, I erase some parts:

sudo apt-add-repository ppa:yannubuntu/boot-repair && sudo apt-get update && sudo apt-get install -y boot-repair
Simple tool to repair frequent boot problems.

Website: https://sourceforge.net/p/boot-repair/home Press [ENTER]...

gpg: keyring /tmp/tmp9xslvw7f/secring.gpg' created
gpg: keyring
/tmp/tmp9xslvw7f/pubring.gpg' created
gpg: imported: 1 (RSA: 1) OK Ign:1 cdrom://Ubuntu 16.04.1 LTS Xenial Xerus - Release amd64 (20160719) xenial InRelease Hit:2 cdrom://Ubuntu 16.04.1 LTS Xenial Xerus - Release amd64 (20160719) xenial Release
Reading package lists... Done Building dependency tree
The following additional packages will be installed:
boot-sav boot-sav-extra gawk glade2script libsigsegv2 pastebinit python-gi Suggested packages:
mbr mdadm clean-ubiquity boot-info os-uninstaller gawk-doc python-gi-cairo Recommended packages:
gksu The following NEW packages will be installed:
boot-repair boot-sav boot-sav-extra gawk glade2script libsigsegv2 pastebinit python-gi
0 upgraded, 8 newly installed, 0 to remove and 349 not upgraded. Need to get 1,228 kB of archives.
After this operation, 5,139 kB of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu xenial/main amd64 libsigsegv2 amd64 2.10-4 [14.1 kB]
Selecting previously unselected package libsigsegv2:amd64.
(Reading database ... 191931 files and directories currently installed.)
Preparing to unpack .../libsigsegv2_2.10-4_amd64.deb ...
Unpacking libsigsegv2:amd64 (2.10-4) ...
Setting up libsigsegv2:amd64 (2.10-4) ...
Processing triggers for libc-bin (2.23-0ubuntu3) ...
Selecting previously unselected package gawk.
(Reading database ... 191939 files and directories currently installed.)
Preparing to unpack .../gawk_1%3a4.1.3+dfsg-0.1_amd64.deb ...
Unpacking gawk (1:4.1.3+dfsg-0.1) ...
Selecting previously unselected package python-gi.
Preparing to unpack .../python-gi_3.20.0-0ubuntu1_amd64.deb ...
Unpacking python-gi (3.20.0-0ubuntu1) ...
Selecting previously unselected package glade2script.
Preparing to unpack .../glade2script_3.2.3~ppa1_all.deb ...
Unpacking glade2script (3.2.3~ppa1) ...
Selecting previously unselected package boot-sav.
Preparing to unpack .../boot-sav_4ppa40_all.deb ...
Unpacking boot-sav (4ppa40) ...
Selecting previously unselected package boot-repair.
Preparing to unpack .../boot-repair_4ppa40_all.deb ... Unpacking boot-repair (4ppa40) ...
Selecting previously unselected package boot-sav-extra.
Preparing to unpack .../boot-sav-extra_4ppa40_all.deb ...
Unpacking boot-sav-extra (4ppa40) ...
Selecting previously unselected package pastebinit.
Preparing to unpack .../pastebinit_1.5-1_all.deb ...
Unpacking pastebinit (1.5-1) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ...
Processing triggers for desktop-file-utils (0.22-1ubuntu5) ...
Processing triggers for bamfdaemon (0.5.3~bzr0+16.04.20160701-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for mime-support (3.59ubuntu1) ...
Setting up gawk (1:4.1.3+dfsg-0.1) ...
Setting up python-gi (3.20.0-0ubuntu1) ...
Setting up glade2script (3.2.3~ppa1) ...
Setting up boot-sav (4ppa40) ...
Setting up boot-repair (4ppa40) ...
Setting up boot-sav-extra (4ppa40) ... Setting up pastebinit (1.5-1) ...

marked as duplicate by David Foerster, Eric Carvalho, Rinzwind, WinEunuuchs2Unix, Byte Commander Dec 24 '16 at 1:17

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

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Maybe this will help you:

sudo apt-add-repository ppa:yannubuntu/boot-repair && sudo apt-get update && sudo apt-get install -y boot-repair
  • Post link from the Summary Report that Boot-Repair creates. Are both Windows & Ubuntu installed in same boot mode, either both UEFI or both BIOS/Legacy/CSM? – oldfred Dec 12 '16 at 16:02
  • Than you Tadeu, i tried **sudo apt-add-repository, and I have handling with many file under: During handling of the above exception, another exception ocurred. And at the end: ERROR: '~yannubutu' user or team does not exist. Error: 'ppa:yannubutu/boot-repair' invalid I will try the other one! – Lara Key Dec 12 '16 at 20:31
  • I add the answers that I have with the commands, I donwload a package isn't to correct errors? Now how can I know which one is the problem, sorry but I don't understand all the codes is like advanced chinese for me. Thank you!!! – Lara Key Dec 12 '16 at 21:11
  • Lara Key! Did you already fix the error? – Tadeu Melembe Dec 28 '16 at 21:47

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