Package kernel-modules-ide-un-def: Information

This package contains  IDE driver modules for the Linux kernel
package kernel-image-un-def-5.12.19-alt1.

These drivers are declared obsolete by the kernel maintainers; PATA
drivers should be used instead.  However, the older IDE drivers may be
still useful for some hardware, if the corresponding PATA drivers do
not work well.

Install this package only if you really need it.