cp /boot/initramfs-3.10.0-514.26.2.el7.x86_64.img /opt/
cd /opt mkdir initramfs cd initramfs /usr/lib/dracut/skipcpio ../initramfs-3.10.0-514.26.2.el7.x86_64.img | zcat | cpio -ivd
centos7 解压initramfs文件
原文：https://www.cnblogs.com/dissipate/p/13125796.html
