Kernel & initrd
Kernel
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What is a Linux Kernel?
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Check kernel version
uname -rAfter installing a new kernel version, a server reboot is required.
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Which file in /boot is the kernel?
Typically, the kernel file itself (located within /boot) is prefaced with 'vmlinuz', for example:
vmlinuz-5.15.0-106-generic
Working on Linux systems, you may see systems with various kernels installed.
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initrd
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What is initrd?
initrd (initialisation RAM disk) is essentially a set of instructions used to load the kernel. initrd is stored temporarily in system memory whilst the kernel is loaded.
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