November 2024
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November 2024
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Rebuilding the initrd RHEL 3, 4, 5 and initramfs RHEL 6, 7

Rebuilding the initrd (RHEL 3, 4, 5)

# cp /boot/initrd-$(uname -r).img /boot/initrd-$(uname -r).img.$(date +%m-%d-%H%M%S).bak
# mkinitrd -f -v /boot/initrd-$(uname -r).img $(uname -r)

If you are in a kernel version different to the initrd you are building (including if you are in Rescue Mode) you must specify the full kernel version, without architecture:

# mkinitrd -f -v /boot/initrd-2.6.18-348.2.1.el5.img 2.6.18-348.2.1.el5

Rebuilding the initramfs (RHEL 6, 7)

# cp /boot/initramfs-$(uname -r).img /boot/initramfs-$(uname -r).img.$(date +%m-%d-%H%M%S).bak
# dracut -f -v

If you are in a kernel version different to the initrd you are building (including if you are in Rescue Mode) you must specify the full kernel version, including architecture:

# dracut -f /boot/initramfs-2.6.32-220.7.1.el6.x86_64.img 2.6.32-220.7.1.el6.x86_64

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