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Problem with sudo apt get update: The repository cdrom… does not have a Release file

Error: Xenial Release repository cdrom does not have a Release fileW: The repository 'cdrom://Ubuntu 16.04.3 LTS _Xenial Xerus_ - Release amd64 (20170801) xenial Release' does not have a Release fileUbuntu installation failed and left apt broken“sudo apt-get update error” ubuntu 17.10sudo apt-get update: CD-ROM does not have a release fileWhy did apt-get update fail?Update from 13.10 to 14.04sudo apt-get update errorsTrouble installing dotnetHow can I fix a 404 Error when using a PPA or updating my package lists?How can I solve this terminal sudo update error/ or software updater error?Software Updater: Requires installation of un-trusted packagesAfter update 15.04 to 15.40 VLC app did not workHow to resolve this problem? “Failed to download repository information”Cannot update docotormo's ppa

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty
margin-bottom:0;

29

9

Every time I try update (using sudo apt-get update) my Ubuntu I get this problem:

W: The repository 'cdrom://Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1) xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch cdrom://Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)/dists/xenial/main/binary-amd64/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
E: Failed to fetch cdrom://Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)/dists/xenial/main/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
E: Failed to fetch ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu/dists/xenial/main/binary-amd64/Packages 404 Not Found
E: Failed to fetch ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu/dists/xenial/main/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.

How can I fix it?

I use Ubuntu 16.04 LTS

apt updates

share|improve this question

edited Apr 1 '17 at 15:04

Zanna

53.9k1515 gold badges150150 silver badges253253 bronze badges

asked May 24 '16 at 8:27

TKCodeTKCode

14611 gold badge22 silver badges33 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  For the ppa error see this question. From what you posted, I guess that updates from other sources are working OK, in which case you don't need to worry much about this error
  
  – Zanna
  May 24 '16 at 8:54
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You can solve those error related to cdrom by unckecking CD ROM source in System Settings > Software and Update
  
  – Mostafa Ahangarha
  May 24 '16 at 10:58
  

  
  
  
  

add a comment
 | 

29

9

Every time I try update (using sudo apt-get update) my Ubuntu I get this problem:

W: The repository 'cdrom://Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1) xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch cdrom://Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)/dists/xenial/main/binary-amd64/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
E: Failed to fetch cdrom://Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)/dists/xenial/main/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
E: Failed to fetch ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu/dists/xenial/main/binary-amd64/Packages 404 Not Found
E: Failed to fetch ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu/dists/xenial/main/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.

How can I fix it?

I use Ubuntu 16.04 LTS

apt updates

share|improve this question

edited Apr 1 '17 at 15:04

Zanna

53.9k1515 gold badges150150 silver badges253253 bronze badges

asked May 24 '16 at 8:27

TKCodeTKCode

14611 gold badge22 silver badges33 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  For the ppa error see this question. From what you posted, I guess that updates from other sources are working OK, in which case you don't need to worry much about this error
  
  – Zanna
  May 24 '16 at 8:54
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You can solve those error related to cdrom by unckecking CD ROM source in System Settings > Software and Update
  
  – Mostafa Ahangarha
  May 24 '16 at 10:58
  

  
  
  
  

add a comment
 | 

Every time I try update (using sudo apt-get update) my Ubuntu I get this problem:

W: The repository 'cdrom://Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1) xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch cdrom://Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)/dists/xenial/main/binary-amd64/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
E: Failed to fetch cdrom://Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)/dists/xenial/main/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
E: Failed to fetch ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu/dists/xenial/main/binary-amd64/Packages 404 Not Found
E: Failed to fetch ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu/dists/xenial/main/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.

How can I fix it?

I use Ubuntu 16.04 LTS

apt updates

share|improve this question

edited Apr 1 '17 at 15:04

Zanna

53.9k1515 gold badges150150 silver badges253253 bronze badges

asked May 24 '16 at 8:27

TKCodeTKCode

14611 gold badge22 silver badges33 bronze badges

W: The repository 'cdrom://Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1) xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch cdrom://Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)/dists/xenial/main/binary-amd64/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
E: Failed to fetch cdrom://Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)/dists/xenial/main/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
E: Failed to fetch ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu/dists/xenial/main/binary-amd64/Packages 404 Not Found
E: Failed to fetch ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu/dists/xenial/main/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.

share|improve this question

edited Apr 1 '17 at 15:04

Zanna

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asked May 24 '16 at 8:27

TKCodeTKCode

14611 gold badge22 silver badges33 bronze badges

share|improve this question

edited Apr 1 '17 at 15:04

Zanna

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asked May 24 '16 at 8:27

TKCodeTKCode

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edited Apr 1 '17 at 15:04

Zanna

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edited Apr 1 '17 at 15:04

Zanna

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asked May 24 '16 at 8:27

TKCodeTKCode

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asked May 24 '16 at 8:27

TKCodeTKCode

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2 Answers
2

active

oldest

votes

23

To resolve this problem from terminal you must remove/comment this CD-ROM repository source directly from /etc/apt/sources.list

 sudo nano /etc/apt/sources.list

and comment or remove lines that include cdrom. eg:

deb cdrom:[Ubuntu-Server 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.3)]/ xenial main restricted

share|improve this answer

edited Oct 8 '16 at 8:59

answered Jul 27 '16 at 9:55

PRIHLOPPRIHLOP

88977 silver badges1313 bronze badges

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  This should be the accepted answer. It works in desktop and server distros.
  
  – mau
  Apr 26 '17 at 18:23
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Solved my problem! But can any one tell that will anything other than cdrom will be affected or not, which we are suggested to comment? (working inside a virtual-machine in VMware)
  
  – Malik Asif
  Nov 1 '17 at 11:10
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  It can`t affect anything other, only cd-rom as source for packages.
  
  – PRIHLOP
  Jan 5 '18 at 19:49
  

  
  
  
  

add a comment
 | 

19

Try this:

Open Software & Updates and in the Ubuntu Software tab uncheck Cdrom with Ubuntu 16.04 LTS 'Xenial Xerus' under the section Installable from CD-ROM/DVD.

share|improve this answer

edited Apr 1 '17 at 15:05

Zanna

53.9k1515 gold badges150150 silver badges253253 bronze badges

answered May 24 '16 at 8:33

Thanos ApostolouThanos Apostolou

3,65611 gold badge1010 silver badges2020 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  worked for me. I am using 14.04. How did this get into the software sources in the first place? The only thing I can imagine is because I made a 16.04 USB stick with startup disk creator.
  
  – atmelino
  Jul 2 '16 at 17:45
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  the same reason for me
  
  – Alexey
  Oct 8 '16 at 6:26
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Had this prob with PureOS, resolved via "Softare&Updates" like in your answer with these additions: In the tab "PureOS Software" where it says "Downloadable from the internet" check the box "Officially supported(main)", the tab "Other Software" uncheck the "cdrom"-box.
  
  – Ida Ebkes
  Feb 10 '18 at 7:44
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @atmelino: Yes, this happens after installing from USB-stick. Looks like there's a bug-report for this, but it has been closed: bugs.debian.org/cgi-bin/bugreport.cgi?bug=807996
  
  – Ida Ebkes
  Feb 10 '18 at 7:50
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  PS: This is one line of the error I got and searched for: E: The repository 'cdrom://[Debian GNU/Linux none Green - Official Snapshot amd64 LIVE/INSTALL Binary 20180120-02:05] green Release' does not have a Release file.
  
  – Ida Ebkes
  Feb 10 '18 at 7:52
  

  
  
  
  

add a comment
 | 

protected by Community♦ Oct 13 '16 at 1:56

Thank you for your interest in this question.
Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).



Would you like to answer one of these unanswered questions instead?

23

To resolve this problem from terminal you must remove/comment this CD-ROM repository source directly from /etc/apt/sources.list

 sudo nano /etc/apt/sources.list

and comment or remove lines that include cdrom. eg:

deb cdrom:[Ubuntu-Server 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.3)]/ xenial main restricted

share|improve this answer

edited Oct 8 '16 at 8:59

answered Jul 27 '16 at 9:55

PRIHLOPPRIHLOP

88977 silver badges1313 bronze badges

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  This should be the accepted answer. It works in desktop and server distros.
  
  – mau
  Apr 26 '17 at 18:23
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Solved my problem! But can any one tell that will anything other than cdrom will be affected or not, which we are suggested to comment? (working inside a virtual-machine in VMware)
  
  – Malik Asif
  Nov 1 '17 at 11:10
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  It can`t affect anything other, only cd-rom as source for packages.
  
  – PRIHLOP
  Jan 5 '18 at 19:49
  

  
  
  
  

add a comment
 | 

23

To resolve this problem from terminal you must remove/comment this CD-ROM repository source directly from /etc/apt/sources.list

 sudo nano /etc/apt/sources.list

and comment or remove lines that include cdrom. eg:

deb cdrom:[Ubuntu-Server 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.3)]/ xenial main restricted

share|improve this answer

edited Oct 8 '16 at 8:59

answered Jul 27 '16 at 9:55

PRIHLOPPRIHLOP

88977 silver badges1313 bronze badges

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  This should be the accepted answer. It works in desktop and server distros.
  
  – mau
  Apr 26 '17 at 18:23
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Solved my problem! But can any one tell that will anything other than cdrom will be affected or not, which we are suggested to comment? (working inside a virtual-machine in VMware)
  
  – Malik Asif
  Nov 1 '17 at 11:10
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  It can`t affect anything other, only cd-rom as source for packages.
  
  – PRIHLOP
  Jan 5 '18 at 19:49
  

  
  
  
  

add a comment
 | 

To resolve this problem from terminal you must remove/comment this CD-ROM repository source directly from /etc/apt/sources.list

 sudo nano /etc/apt/sources.list

and comment or remove lines that include cdrom. eg:

deb cdrom:[Ubuntu-Server 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.3)]/ xenial main restricted

share|improve this answer

edited Oct 8 '16 at 8:59

answered Jul 27 '16 at 9:55

PRIHLOPPRIHLOP

88977 silver badges1313 bronze badges

 sudo nano /etc/apt/sources.list

deb cdrom:[Ubuntu-Server 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.3)]/ xenial main restricted

share|improve this answer

edited Oct 8 '16 at 8:59

answered Jul 27 '16 at 9:55

PRIHLOPPRIHLOP

88977 silver badges1313 bronze badges

answered Jul 27 '16 at 9:55

PRIHLOPPRIHLOP

88977 silver badges1313 bronze badges

answered Jul 27 '16 at 9:55

PRIHLOPPRIHLOP

88977 silver badges1313 bronze badges

19

Try this:

Open Software & Updates and in the Ubuntu Software tab uncheck Cdrom with Ubuntu 16.04 LTS 'Xenial Xerus' under the section Installable from CD-ROM/DVD.

share|improve this answer

edited Apr 1 '17 at 15:05

Zanna

53.9k1515 gold badges150150 silver badges253253 bronze badges

answered May 24 '16 at 8:33

Thanos ApostolouThanos Apostolou

3,65611 gold badge1010 silver badges2020 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  worked for me. I am using 14.04. How did this get into the software sources in the first place? The only thing I can imagine is because I made a 16.04 USB stick with startup disk creator.
  
  – atmelino
  Jul 2 '16 at 17:45
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  the same reason for me
  
  – Alexey
  Oct 8 '16 at 6:26
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Had this prob with PureOS, resolved via "Softare&Updates" like in your answer with these additions: In the tab "PureOS Software" where it says "Downloadable from the internet" check the box "Officially supported(main)", the tab "Other Software" uncheck the "cdrom"-box.
  
  – Ida Ebkes
  Feb 10 '18 at 7:44
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @atmelino: Yes, this happens after installing from USB-stick. Looks like there's a bug-report for this, but it has been closed: bugs.debian.org/cgi-bin/bugreport.cgi?bug=807996
  
  – Ida Ebkes
  Feb 10 '18 at 7:50
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  PS: This is one line of the error I got and searched for: E: The repository 'cdrom://[Debian GNU/Linux none Green - Official Snapshot amd64 LIVE/INSTALL Binary 20180120-02:05] green Release' does not have a Release file.
  
  – Ida Ebkes
  Feb 10 '18 at 7:52
  

  
  
  
  

add a comment
 | 

19

Try this:

Open Software & Updates and in the Ubuntu Software tab uncheck Cdrom with Ubuntu 16.04 LTS 'Xenial Xerus' under the section Installable from CD-ROM/DVD.

share|improve this answer

edited Apr 1 '17 at 15:05

Zanna

53.9k1515 gold badges150150 silver badges253253 bronze badges

answered May 24 '16 at 8:33

Thanos ApostolouThanos Apostolou

3,65611 gold badge1010 silver badges2020 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  worked for me. I am using 14.04. How did this get into the software sources in the first place? The only thing I can imagine is because I made a 16.04 USB stick with startup disk creator.
  
  – atmelino
  Jul 2 '16 at 17:45
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  the same reason for me
  
  – Alexey
  Oct 8 '16 at 6:26
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Had this prob with PureOS, resolved via "Softare&Updates" like in your answer with these additions: In the tab "PureOS Software" where it says "Downloadable from the internet" check the box "Officially supported(main)", the tab "Other Software" uncheck the "cdrom"-box.
  
  – Ida Ebkes
  Feb 10 '18 at 7:44
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @atmelino: Yes, this happens after installing from USB-stick. Looks like there's a bug-report for this, but it has been closed: bugs.debian.org/cgi-bin/bugreport.cgi?bug=807996
  
  – Ida Ebkes
  Feb 10 '18 at 7:50
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  PS: This is one line of the error I got and searched for: E: The repository 'cdrom://[Debian GNU/Linux none Green - Official Snapshot amd64 LIVE/INSTALL Binary 20180120-02:05] green Release' does not have a Release file.
  
  – Ida Ebkes
  Feb 10 '18 at 7:52
  

  
  
  
  

add a comment
 | 

Try this:

Open Software & Updates and in the Ubuntu Software tab uncheck Cdrom with Ubuntu 16.04 LTS 'Xenial Xerus' under the section Installable from CD-ROM/DVD.

share|improve this answer

edited Apr 1 '17 at 15:05

Zanna

53.9k1515 gold badges150150 silver badges253253 bronze badges

answered May 24 '16 at 8:33

Thanos ApostolouThanos Apostolou

3,65611 gold badge1010 silver badges2020 bronze badges

share|improve this answer

edited Apr 1 '17 at 15:05

Zanna

53.9k1515 gold badges150150 silver badges253253 bronze badges

answered May 24 '16 at 8:33

Thanos ApostolouThanos Apostolou

3,65611 gold badge1010 silver badges2020 bronze badges

edited Apr 1 '17 at 15:05

Zanna

53.9k1515 gold badges150150 silver badges253253 bronze badges

edited Apr 1 '17 at 15:05

Zanna

53.9k1515 gold badges150150 silver badges253253 bronze badges

answered May 24 '16 at 8:33

Thanos ApostolouThanos Apostolou

3,65611 gold badge1010 silver badges2020 bronze badges

answered May 24 '16 at 8:33

Thanos ApostolouThanos Apostolou

3,65611 gold badge1010 silver badges2020 bronze badges