Bdtyktl

This is similar to Xenial repository does not have a Release file, but the fix in there does not work for me.

When running sudo apt-get update on a few-day old installation of Ubuntu 16.04, it returns the following error messages:

    $ sudo apt-get update

Get:1 http://archive.ubuntu.com/ubuntu xenial InRelease [247 kB]

Get:2 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]

Get:3 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]

Get:4 http://archive.ubuntu.com/ubuntu xenial-security InRelease [102 kB]

Get:5 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages [1,201 kB]

Get:6 http://archive.ubuntu.com/ubuntu xenial/main i386 Packages [1,196 kB]

Get:7 http://archive.ubuntu.com/ubuntu xenial/main Translation-en_GB [426 kB]

Get:8 http://archive.ubuntu.com/ubuntu xenial/main Translation-en [568 kB]

Get:9 http://archive.ubuntu.com/ubuntu xenial/main amd64 DEP-11 Metadata [733 kB]

Get:10 http://archive.ubuntu.com/ubuntu xenial/main DEP-11 64x64 Icons [409 kB]

Get:11 http://archive.ubuntu.com/ubuntu xenial/restricted amd64 Packages [8,344 B]

Get:12 http://archive.ubuntu.com/ubuntu xenial/restricted i386 Packages [8,684 B]

Get:13 http://archive.ubuntu.com/ubuntu xenial/restricted Translation-en_GB [2,556 B]

Get:14 http://archive.ubuntu.com/ubuntu xenial/restricted Translation-en [2,908 B]

Get:15 http://archive.ubuntu.com/ubuntu xenial/restricted amd64 DEP-11 Metadata [186 B]

Get:16 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages [7,532 kB]

Get:17 http://archive.ubuntu.com/ubuntu xenial/universe i386 Packages [7,512 kB]                                                    

Get:18 http://archive.ubuntu.com/ubuntu xenial/universe Translation-en_GB [3,040 kB]                                                

Get:19 http://archive.ubuntu.com/ubuntu xenial/universe Translation-en [4,354 kB]                                                   

Get:20 http://archive.ubuntu.com/ubuntu xenial/universe amd64 DEP-11 Metadata [3,410 kB]                                            

Get:21 http://archive.ubuntu.com/ubuntu xenial/universe DEP-11 64x64 Icons [7,448 kB]                                               

Get:22 http://archive.ubuntu.com/ubuntu xenial/multiverse amd64 Packages [144 kB]                                                   

Get:23 http://archive.ubuntu.com/ubuntu xenial/multiverse i386 Packages [140 kB]                                                    

Get:24 http://archive.ubuntu.com/ubuntu xenial/multiverse Translation-en_GB [88.1 kB]                                               

Get:25 http://archive.ubuntu.com/ubuntu xenial/multiverse Translation-en [106 kB]                                                   

Get:26 http://archive.ubuntu.com/ubuntu xenial/multiverse amd64 DEP-11 Metadata [63.8 kB]                                           

Get:27 http://archive.ubuntu.com/ubuntu xenial/multiverse DEP-11 64x64 Icons [230 kB]                                               

Get:28 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages [700 kB]                                                 

Get:29 http://archive.ubuntu.com/ubuntu xenial-updates/main i386 Packages [654 kB]                                                  

Get:30 http://archive.ubuntu.com/ubuntu xenial-updates/main Translation-en [292 kB]                                                 

Get:31 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 DEP-11 Metadata [308 kB]                                          

Get:32 http://archive.ubuntu.com/ubuntu xenial-updates/main DEP-11 64x64 Icons [221 kB]                                             

Get:33 http://archive.ubuntu.com/ubuntu xenial-updates/restricted amd64 Packages [7,604 B]                                          

Get:34 http://archive.ubuntu.com/ubuntu xenial-updates/restricted i386 Packages [7,604 B]                                           

Get:35 http://archive.ubuntu.com/ubuntu xenial-updates/restricted Translation-en [2,272 B]                                          

Get:36 http://archive.ubuntu.com/ubuntu xenial-updates/restricted amd64 DEP-11 Metadata [157 B]                                     

Get:37 http://archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages [574 kB]                                             

Get:38 http://archive.ubuntu.com/ubuntu xenial-updates/universe i386 Packages [535 kB]                                              

Get:39 http://archive.ubuntu.com/ubuntu xenial-updates/universe Translation-en [232 kB]                                             

Get:40 http://archive.ubuntu.com/ubuntu xenial-updates/universe amd64 DEP-11 Metadata [185 kB]                                      

Get:41 http://archive.ubuntu.com/ubuntu xenial-updates/universe DEP-11 64x64 Icons [262 kB]                                         

Get:42 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse amd64 Packages [16.2 kB]                                          

Get:43 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse i386 Packages [15.3 kB]                                           

Get:44 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse Translation-en [8,052 B]                                          

Get:45 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse amd64 DEP-11 Metadata [5,888 B]                                   

Get:46 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse DEP-11 64x64 Icons [14.3 kB]                                      

Get:47 http://archive.ubuntu.com/ubuntu xenial-backports/main amd64 Packages [4,840 B]                                              

Get:48 http://archive.ubuntu.com/ubuntu xenial-backports/main i386 Packages [4,832 B]                                               

Get:49 http://archive.ubuntu.com/ubuntu xenial-backports/main Translation-en [3,220 B]                                              

Get:50 http://archive.ubuntu.com/ubuntu xenial-backports/main amd64 DEP-11 Metadata [3,324 B]                                       

Get:51 http://archive.ubuntu.com/ubuntu xenial-backports/main DEP-11 64x64 Icons [29 B]                                             

Get:52 http://archive.ubuntu.com/ubuntu xenial-backports/restricted amd64 DEP-11 Metadata [194 B]                                   

Get:53 http://archive.ubuntu.com/ubuntu xenial-backports/universe amd64 Packages [6,612 B]                                          

Get:54 http://archive.ubuntu.com/ubuntu xenial-backports/universe i386 Packages [6,600 B]                                           

Get:55 http://archive.ubuntu.com/ubuntu xenial-backports/universe Translation-en [3,768 B]                                          

Get:56 http://archive.ubuntu.com/ubuntu xenial-backports/universe amd64 DEP-11 Metadata [4,712 B]                                   

Get:57 http://archive.ubuntu.com/ubuntu xenial-backports/universe DEP-11 64x64 Icons [2,716 B]                                      

Get:58 http://archive.ubuntu.com/ubuntu xenial-backports/multiverse amd64 DEP-11 Metadata [216 B]                                   

Get:59 http://archive.ubuntu.com/ubuntu xenial-backports/multiverse DEP-11 64x64 Icons [29 B]                                       

Get:60 http://archive.ubuntu.com/ubuntu xenial-security/main amd64 Packages [425 kB]                                                

Get:61 http://archive.ubuntu.com/ubuntu xenial-security/main i386 Packages [385 kB]                                                 

Get:62 http://archive.ubuntu.com/ubuntu xenial-security/main Translation-en [186 kB]                                                

Get:63 http://archive.ubuntu.com/ubuntu xenial-security/main amd64 DEP-11 Metadata [62.8 kB]                                        

Get:64 http://archive.ubuntu.com/ubuntu xenial-security/main DEP-11 64x64 Icons [66.2 kB]                                           

Get:65 http://archive.ubuntu.com/ubuntu xenial-security/restricted amd64 Packages [7,224 B]                                         

Get:66 http://archive.ubuntu.com/ubuntu xenial-security/restricted i386 Packages [7,224 B]                                          

Get:67 http://archive.ubuntu.com/ubuntu xenial-security/restricted Translation-en [2,152 B]                                         

Get:68 http://archive.ubuntu.com/ubuntu xenial-security/restricted amd64 DEP-11 Metadata [200 B]                                    

Get:69 http://archive.ubuntu.com/ubuntu xenial-security/universe amd64 Packages [196 kB]                                            

Get:70 http://archive.ubuntu.com/ubuntu xenial-security/universe i386 Packages [161 kB]                                             

Get:71 http://archive.ubuntu.com/ubuntu xenial-security/universe Translation-en [101 kB]                                            

Get:72 http://archive.ubuntu.com/ubuntu xenial-security/universe amd64 DEP-11 Metadata [51.3 kB]                                    

Get:73 http://archive.ubuntu.com/ubuntu xenial-security/universe DEP-11 64x64 Icons [85.1 kB]                                       

Get:74 http://archive.ubuntu.com/ubuntu xenial-security/multiverse amd64 Packages [3,208 B]                                         

Get:75 http://archive.ubuntu.com/ubuntu xenial-security/multiverse i386 Packages [3,380 B]                                          

Get:76 http://archive.ubuntu.com/ubuntu xenial-security/multiverse Translation-en [1,408 B]                                         

Get:77 http://archive.ubuntu.com/ubuntu xenial-security/multiverse amd64 DEP-11 Metadata [212 B]                                    

Get:78 http://archive.ubuntu.com/ubuntu xenial-security/multiverse DEP-11 64x64 Icons [29 B]                                        

Fetched 45.0 MB in 28s (1,577 kB/s)                                                                                                 

Reading package lists... Error!

E: Read error - read (5: Input/output error)

W: You may want to run apt-get update to correct these problems

E: The package cache file is corrupted

/etc/apt/sources/list:

# deb cdrom:[Ubuntu 16.04.3 LTS _Xenial Xerus_ - Release amd64 (20170801)]/ xenial main restricted



# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to

# newer versions of the distribution.

deb http://archive.ubuntu.com/ubuntu xenial main restricted

# deb-src http://gb.archive.ubuntu.com/ubuntu/ xenial main restricted



## Major bug fix updates produced after the final release of the

## distribution.

deb http://archive.ubuntu.com/ubuntu xenial-updates main restricted

# deb-src http://gb.archive.ubuntu.com/ubuntu/ xenial-updates main restricted



## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu

## team. Also, please note that software in universe WILL NOT receive any

## review or updates from the Ubuntu security team.

deb http://archive.ubuntu.com/ubuntu xenial universe

# deb-src http://gb.archive.ubuntu.com/ubuntu/ xenial universe

deb http://archive.ubuntu.com/ubuntu xenial-updates universe

# deb-src http://gb.archive.ubuntu.com/ubuntu/ xenial-updates universe



## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 

## team, and may not be under a free licence. Please satisfy yourself as to 

## your rights to use the software. Also, please note that software in 

## multiverse WILL NOT receive any review or updates from the Ubuntu

## security team.

deb http://archive.ubuntu.com/ubuntu xenial multiverse

# deb-src http://gb.archive.ubuntu.com/ubuntu/ xenial multiverse

deb http://archive.ubuntu.com/ubuntu xenial-updates multiverse

# deb-src http://gb.archive.ubuntu.com/ubuntu/ xenial-updates multiverse



## N.B. software from this repository may not have been tested as

## extensively as that contained in the main release, although it includes

## newer versions of some applications which may provide useful features.

## Also, please note that software in backports WILL NOT receive any review

## or updates from the Ubuntu security team.

deb http://archive.ubuntu.com/ubuntu xenial-backports main restricted universe multiverse

# deb-src http://gb.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse



## Uncomment the following two lines to add software from Canonical's

## 'partner' repository.

## This software is not part of Ubuntu, but is offered by Canonical and the

## respective vendors as a service to Ubuntu users.

# deb http://archive.canonical.com/ubuntu xenial partner

# deb-src http://archive.canonical.com/ubuntu xenial partner



deb http://archive.ubuntu.com/ubuntu xenial-security main restricted

# deb-src http://security.ubuntu.com/ubuntu xenial-security main restricted

deb http://archive.ubuntu.com/ubuntu xenial-security universe

# deb-src http://security.ubuntu.com/ubuntu xenial-security universe

deb http://archive.ubuntu.com/ubuntu xenial-security multiverse

deb http://archive.ubuntu.com xenial universe

# deb-src http://archive.ubuntu.com xenial universe

# deb-src http://security.ubuntu.com/ubuntu xenial-security multiverse

$ grep -nwFe Release /etc/apt/sources.list{,.d/*.list}

/etc/apt/sources.list:1:# deb cdrom:[Ubuntu 16.04.3 LTS _Xenial Xerus_ - Release amd64 (20170801)]/ xenial main restricted

I have tried sudo rm /var/lib/apt/lists/* and my /etc/apt/sources/list already has line 52 commented out, and line 54 doesn't exist. (Both solutions I've found on this and other forums).

The third line from the bottom in your /etc/apt/sources.list seems to be wrong:

deb http://archive.ubuntu.com xenial universe

I think that line is what's causing the error, so I'd suggest that you remove it.

Edit:

After doing so there may be a need to clean up the package cache, which you can do by running:

sudo rm /var/lib/apt/lists/*

and then:

sudo apt update

In my case the issue was really dumb. I had no network access outside my server. It took me quite a while to realize that was my problem ;-)