我按照 Fedora 26 安装说明遇到了问题https://www.if-not-true-then-false.com/2010/install-virtualbox-with-yum-on-fedora-centos-red-hat-rhel/
在网页的第 5 步中，该dnf install VirtualBox-5.2命令导致错误消息，我已在本论坛查询的末尾给出了该错误消息。由于我不明白这些消息的含义，因此我继续执行步骤 5/usr/lib/virtualbox/vboxdrv.sh setup命令。该命令失败；该/usr/lib/virtualbox/目录确实不是现在存在。
我知道问题发生的原因，但不知道如何解决。 几个月前，我安装了Fedora-Workstation-Live-x86_64-26-1.5.iso，然后手动执行dnf install @cinnamon-desktop，然后dnf install VirtualBox。当时我没有执行任何其他操作虚拟盒安装相关命令。 VirtualBox 没有显示在 cinnamon 启动菜单中，我随后忘记了我已经安装了它。 我请求帮助解决这个混乱的问题。
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[root@ip98-167-107-31 yum.repos.d]# dnf install VirtualBox-5.2
Last metadata expiration check: 0:17:20 ago on Fri 01 Dec 2017 01:09:48 AM PST.
dependencies resolved.
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Package Arch Version Repository Size
=================================================================================================================
Installing:
VirtualBox-5.2 x86_64 5.2.2_119230_fedora26-1 virtualbox 70 M
Transaction Summary
=================================================================================================================
Install 1 Package
Total download size: 70 M
Installed size: 154 M
Is this ok [y/N]: y
Downloading Packages:
VirtualBox-5.2-5.2.2_119230_fedora26-1.x86_64.rpm 15 MB/s | 70 MB 00:04
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Total 15 MB/s | 70 MB 00:04
warning: /var/cache/dnf/virtualbox-4917f85f98c326df/packages/VirtualBox-5.2-5.2.2_119230_fedora26-1.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 98ab5139: NOKEY
Importing GPG key 0x98AB5139:
Userid : "Oracle Corporation (VirtualBox archive signing key) <[email protected]>"
Fingerprint: 7B0F AB3A 13B9 0743 5925 D9C9 5442 2A4B 98AB 5139
From : https://www.virtualbox.org/download/oracle_vbox.asc
Is this ok [y/N]: y
Key imported successfully
Running transaction check
Transaction check succeeded.
Running transaction test
The downloaded packages were saved in cache until the next successful transaction.
You can remove cached packages by executing 'dnf clean packages'.
Error: Transaction check error:
file /usr/bin/VBox from install of VirtualBox-5.2-5.2.2_119230_fedora26-1.x86_64 conflicts with file from package VirtualBox-server-5.1.30-2.fc26.x86_64
file /usr/bin/VBoxTunctl from install of VirtualBox-5.2-5.2.2_119230_fedora26-1.x86_64 conflicts with file from package VirtualBox-server-5.1.30-2.fc26.x86_64
file /usr/bin/vbox-img from install of VirtualBox-5.2-5.2.2_119230_fedora26-1.x86_64 conflicts with file from package VirtualBox-server-5.1.30-2.fc26.x86_64
file /usr/share/icons/hicolor/128x128/apps/virtualbox.png from install of VirtualBox-5.2-5.2.2_119230_fedora26-1.x86_64 conflicts with file from package VirtualBox-server-5.1.30-2.fc26.x86_64
file /usr/share/icons/hicolor/16x16/apps/virtualbox.png from install of VirtualBox-5.2-5.2.2_119230_fedora26-1.x86_64 conflicts with file from package VirtualBox-server-5.1.30-2.fc26.x86_64
file /usr/share/icons/hicolor/20x20/apps/virtualbox.png from install of VirtualBox-5.2-5.2.2_119230_fedora26-1.x86_64 conflicts with file from package VirtualBox-server-5.1.30-2.fc26.x86_64
file /usr/share/icons/hicolor/32x32/apps/virtualbox.png from install of VirtualBox-5.2-5.2.2_119230_fedora26-1.x86_64 conflicts with file from package VirtualBox-server-5.1.30-2.fc26.x86_64
file /usr/share/icons/hicolor/40x40/apps/virtualbox.png from install of VirtualBox-5.2-5.2.2_119230_fedora26-1.x86_64 conflicts with file from package VirtualBox-server-5.1.30-2.fc26.x86_64
file /usr/share/icons/hicolor/48x48/apps/virtualbox.png from install of VirtualBox-5.2-5.2.2_119230_fedora26-1.x86_64 conflicts with file from package VirtualBox-server-5.1.30-2.fc26.x86_64
file /usr/share/icons/hicolor/64x64/apps/virtualbox.png from install of VirtualBox-5.2-5.2.2_119230_fedora26-1.x86_64 conflicts with file from package VirtualBox-server-5.1.30-2.fc26.x86_64
file /usr/share/mime/packages/virtualbox.xml from install of VirtualBox-5.2-5.2.2_119230_fedora26-1.x86_64 conflicts with file from package VirtualBox-server-5.1.30-2.fc26.x86_64
file /usr/share/applications/virtualbox.desktop from install of VirtualBox-5.2-5.2.2_119230_fedora26-1.x86_64 conflicts with file from package VirtualBox-5.1.30-2.fc26.x86_64
file /usr/share/pixmaps/VBox.png from install of VirtualBox-5.2-5.2.2_119230_fedora26-1.x86_64 conflicts with file from package VirtualBox-5.1.30-2.fc26.x86_64
Error Summary
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[root@ip98-167-107-31 yum.repos.d]#
答案1
该VirtualBox-5.2软件包不是您已安装的现有软件包的升级，因此您需要删除后者：
sudo dnf remove VirtualBox VirtualBox-server
再次安装之前VirtualBox-5.2。
答案2
检查下载的 rpm 包并使用 rpm -Uvh --replacefiles 安装