Yes you can delete the directory and its content.
The command mkinitrd has an option to clear the tree first ( -c ) and it
is recommended.
The script /var/lib/pkgtools/setup/setup.01.mkinitrd generates during
the installation process, a command line for mkinitrd which includes the
-c option to get a fresh, clean initrd image based on the new kernel.
Ciao
Giovanni
--
A computer is like an air conditioner,
it stops working when you open Windows.
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