(chroot) megah4x / # emerge -a os-prober

 * IMPORTANT: config file '/etc/portage/package.use/zz-autounmask' needs updating.
 * See the CONFIGURATION FILES and CONFIGURATION FILES UPDATE TOOLS
 * sections of the emerge man page to learn how to update config files.

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild  N     ] sys-fs/fuse-2.9.7  USE="-examples -static-libs"
[ebuild   R    ] sys-boot/grub-2.02-r1  USE="mount*"
[ebuild  N     ] sys-boot/os-prober-1.76-r1

The following USE changes are necessary to proceed:
 (see "package.use" in the portage(5) man page for more details)
# required by sys-boot/os-prober-1.76-r1::gentoo
# required by os-prober (argument)
>=sys-boot/grub-2.02-r1 mount

Would you like to add these changes to your config files? [Yes/No]

Autounmask changes successfully written.

 * IMPORTANT: 2 config files in '/etc/portage' need updating.
 * See the CONFIGURATION FILES and CONFIGURATION FILES UPDATE TOOLS
 * sections of the emerge man page to learn how to update config files.
(chroot) megah4x / #