1、CentOS 设置cdrom为yum源
mv CentOS-Base.repo CentOS-Base.repo.old,
mv CentOS-Media.repo CentOS-Media.repo.old
vim -Media.repo
[c5-media]
name=CentOS-$releasever - Media
baseurl=file:///cdrom/
# file:///media/cdrom/
# file:///media/cdrecorder/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
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