How to remove Fedora 42

Ask Fedora
1

Hi there I installed Fedora 42 by error how to remove it and leave just the 41 version? Thanks

2

AFAIK you cannot. A downgrade of the installed version is not supported and it usually requires a reinstall.

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3

You can downgrade Fedora 42 to Fedora 41 like this:

sudo dnf swap fedora-repos-rawhide fedora-repos --releasever=41
sudo dnf distro-sync --releasever=41 --allowerasing --offline
sudo dnf offline reboot
sudo dnf remove kernel\*-6.12.\*
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5

Thank you! You saved my day!

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6

I tried today (April 2025) to downgrade from 42 to 41.

I used the commands given, ommiting the change from rawhide to fedora-repos, as the Fedora repos were already the active one at this time.

When the download finished and the transaction was tested, it failed as a bunch of the 41 files conflicted with the 42 files.

Output:

Testing offline transaction
Transaction failed: Rpm transaction failed.
  - file /usr/bin/tclsh8.6 from install of tcl-1:8.6.14-5.fc41.x86_64 conflicts with file from package tcl8-1:8.6.15-10.fc42.x86_64
  - file /usr/lib64/libtcl8.6.so from install of tcl-1:8.6.14-5.fc41.x86_64 conflicts with file from package tcl8-1:8.6.15-10.fc42.x86_64
  - file /usr/share/tcl8.6/auto.tcl from install of tcl-1:8.6.14-5.fc41.x86_64 conflicts with file from package tcl8-1:8.6.15-10.fc42.x86_64
  - file /usr/share/tcl8.6/clock.tcl from install of tcl-1:8.6.14-5.fc41.x86_64 conflicts with file from package tcl8-1:8.6.15-10.fc42.x86_64
  - file /usr/share/tcl8.6/encoding/koi8-u.enc from install of tcl-1:8.6.14-5.fc41.x86_64 conflicts with file from package tcl8-1:8.6.15-10.fc42.x86_64
  - file /usr/share/tcl8.6/history.tcl from install of tcl-1:8.6.14-5.fc41.x86_64 conflicts with file from package tcl8-1:8.6.15-10.fc42.x86_64
  - file /usr/share/tcl8.6/http1.0/http.tcl from install of tcl-1:8.6.14-5.fc41.x86_64 conflicts with file from package tcl8-1:8.6.15-10.fc42.x86_64
  - file /usr/share/tcl8.6/init.tcl from install of tcl-1:8.6.14-5.fc41.x86_64 conflicts with file from package tcl8-1:8.6.15-10.fc42.x86_64
  - file /usr/share/tcl8.6/opt0.4/optparse.tcl from install of tcl-1:8.6.14-5.fc41.x86_64 conflicts with file from package tcl8-1:8.6.15-10.fc42.x86_64
  - file /usr/share/tcl8.6/opt0.4/pkgIndex.tcl from install of tcl-1:8.6.14-5.fc41.x86_64 conflicts with file from package tcl8-1:8.6.15-10.fc42.x86_64
  - file /usr/share/tcl8.6/package.tcl from install of tcl-1:8.6.14-5.fc41.x86_64 conflicts with file from package tcl8-1:8.6.15-10.fc42.x86_64
  - file /usr/share/tcl8.6/safe.tcl from install of tcl-1:8.6.14-5.fc41.x86_64 conflicts with file from package tcl8-1:8.6.15-10.fc42.x86_64
  - file /usr/share/tcl8.6/tclIndex from install of tcl-1:8.6.14-5.fc41.x86_64 conflicts with file from package tcl8-1:8.6.15-10.fc42.x86_64
  - file /usr/share/tcl8.6/tm.tcl from install of tcl-1:8.6.14-5.fc41.x86_64 conflicts with file from package tcl8-1:8.6.15-10.fc42.x86_64
  - file /usr/share/tcl8/8.4/platform/shell-1.1.4.tm from install of tcl-1:8.6.14-5.fc41.x86_64 conflicts with file from package tcl8-1:8.6.15-10.fc42.x86_64
  - file /usr/share/tcl8/8.5/msgcat-1.6.1.tm from install of tcl-1:8.6.14-5.fc41.x86_64 conflicts with file from package tcl8-1:8.6.15-10.fc42.x86_64
  - file /usr/share/tcl8/8.6/http-2.9.8.tm from install of tcl-1:8.6.14-5.fc41.x86_64 conflicts with file from package tcl8-1:8.6.15-10.fc42.x86_64
  - file /usr/bin/wish8.6 from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/lib64/libtk8.6.so from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/lib64/tk8.6/pkgIndex.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/console.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/demos/cscroll.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/demos/spin.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/demos/widget from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/tclIndex from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/tk.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/ttk/altTheme.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/ttk/aquaTheme.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/ttk/clamTheme.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/ttk/classicTheme.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/ttk/combobox.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/ttk/defaults.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/ttk/panedwindow.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/ttk/scrollbar.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/ttk/sizegrip.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/ttk/ttk.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/ttk/utils.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/ttk/vistaTheme.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/ttk/winTheme.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/share/tk8.6/ttk/xpTheme.tcl from install of tk-1:8.6.14-2.fc41.x86_64 conflicts with file from package tk8-1:8.6.15-5.fc42.x86_64
  - file /usr/bin/systemd-sysusers from install of systemd-256.12-1.fc41.x86_64 conflicts with file from package systemd-sysusers-257.5-2.fc42.x86_64
  - file /usr/share/man/man5/sysusers.d.5.gz from install of systemd-256.12-1.fc41.x86_64 conflicts with file from package systemd-sysusers-257.5-2.fc42.x86_64
  - file /usr/share/man/man8/systemd-sysusers.8.gz from install of systemd-256.12-1.fc41.x86_64 conflicts with file from package systemd-sysusers-257.5-2.fc42.x86_64

So I could not sudo dnf offline reboot, and the 4GB download was not stored (I’m on a limited connection is why I mention that).

7

That instruction was tested when F42 was still rawhide, so it’s not surprising that something no longer works.

You can as well enable persistent DNF cache and downgrade interactively from a live session with a custom installroot, which should be easier to troubleshoot.

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