20.04 installer no longer works

[SylveonDeko]

The 20.04 installer no longer works as canonical has removed 20.04 and now have 20.04.1

08-08 08:41 DEBUG TaskList: ### Running get_metalink...
08-08 08:41 DEBUG downloader: downloading http://releases.ubuntu.com/20.04/ubuntu-20.04-desktop-amd64.metalink > C:\ubuntu\install
08-08 08:41 ERROR CommonBackend: Cannot download metalink file http://releases.ubuntu.com/20.04/ubuntu-20.04-desktop-amd64.metalink err=[Errno 14] HTTP Error 404: Not Found
08-08 08:41 DEBUG downloader: downloading http://cdimage.ubuntu.com/daily-live/pending/focal-desktop-amd64.metalink > C:\ubuntu\install
08-08 08:41 ERROR CommonBackend: Cannot download metalink file2 http://cdimage.ubuntu.com/daily-live/pending/focal-desktop-amd64.metalink err=[Errno 14] HTTP Error 404: Not Found
08-08 08:41 DEBUG TaskList: ### Finished get_metalink

[SylveonDeko]

Ubuntu mate works fine however

[Svahnen]

I just tried ubuntu mate, and got error that the logfile was already in use at the end of the installation and then the program just shuts off. Nothing happens on reboot, and if i run wubi again it says there is already and installation and asks me if i want to uninstall it.

Here is the logfile in question https://pastebin.com/5jfux6s5

[hakuna-m]

The 20.04 installer no longer works as canonical has removed 20.04 and now have 20.04.1

I will release an upgrade for 20.04.1.

It should still work if you download the ISO manually. http://releases.ubuntu.com/20.04.1/ubuntu-20.04.1-desktop-amd64.iso

see How can I use a pre-downloaded ISO file ?

[hakuna-m]

I just tried ubuntu mate, and got error that the logfile was already in use at the end of the installation and then the program just shuts off. Nothing happens on reboot, and if i run wubi again it says there is already and installation and asks me if i want to uninstall it.

You got a download issue...

DownloadError: rejected by tracker - Requested download is not authorized for use with this tracker.

....and a subsequent message about the downloaded iso:

WindowsError: [Error 32] The process cannot access the file because it is being used by another process: u'C:\ubuntu\install\ubuntu-mate-20.04-desktop-amd64.iso'

The download issue is probably a temporary issue: see https://askubuntu.com/a/884246
So you can try again after uninstalling the installed parts.

But maybe, it is better to wait for the Wubiuefi release for 20.04.1 with newer download links.

[hakuna-m]

The 20.04 installer no longer works as canonical has removed 20.04 and now have 20.04.1

Unfortunately, it is not only a replacement. 20.04.1 has no metalinks. So it is necessary to change download steps.

[hakuna-m]

The new release 20041r341 should fix all download issues which were reported above.

09-06 18:10 DEBUG  downloader: downloading http://releases.ubuntu.com/20.04.1/ubuntu-20.04.1-desktop-amd64.list > C:\ubuntu\install
09-06 18:11 DEBUG  downloader: Download start filename=C:\ubuntu\install\ubuntu-20.04.1-desktop-amd64.list, url=http://releases.ubuntu.com/20.04.1/ubuntu-20.04.1-desktop-amd64.list, basename=ubuntu-20.04.1-desktop-amd64.list, length=20721, text=None
09-06 18:11 DEBUG  downloader: download finished (read 20721 bytes)
09-06 18:11 DEBUG  downloader: downloading http://releases.ubuntu.com/20.04.1/SHA256SUMS > C:\ubuntu\install
09-06 18:11 DEBUG  downloader: Download start filename=C:\ubuntu\install\SHA256SUMS, url=http://releases.ubuntu.com/20.04.1/SHA256SUMS, basename=SHA256SUMS, length=202, text=None
09-06 18:11 DEBUG  downloader: download finished (read 202 bytes)
09-06 18:11 DEBUG  downloader: downloading http://releases.ubuntu.com/20.04.1/SHA256SUMS.gpg > C:\ubuntu\install
09-06 18:11 DEBUG  downloader: Download start filename=C:\ubuntu\install\SHA256SUMS.gpg, url=http://releases.ubuntu.com/20.04.1/SHA256SUMS.gpg, basename=SHA256SUMS.gpg, length=833, text=None
09-06 18:11 DEBUG  downloader: download finished (read 833 bytes)
09-06 18:11 INFO   saplog: Verified a signature from ID:'D94AA3F0EFE21092'.
09-06 18:11 INFO   saplog: Checking block bindings..
09-06 18:11 INFO   saplog: Key verified successfully.
09-06 18:11 DEBUG  CommonBackend: metalink md5sums:
b45165ed3cd437b9ffad02a2aad22a4ddc69162470e2622982889ce5826f6e3d *ubuntu-20.04.1-desktop-amd64.iso
443511f6bf12402c12503733059269a2e10dec602916c0a75263e5d990f6bb93 *ubuntu-20.04.1-live-server-amd64.iso

09-06 18:11 DEBUG  TaskList: ### Finished get_metalink

edit: The new method uses the location of a .list file to get all important information for downloading and checking the iso. As the Ubuntu site contains a file with hash sums of the iso and a matching signature file, Wubiuefi can still use a signed hash sum to check downloaded iso.