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unable to make config file for grub after compiling kernel
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picarica
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Joined: 11 Aug 2018
Posts: 70

PostPosted: Mon Nov 26, 2018 5:43 pm    Post subject: unable to make config file for grub after compiling kernel Reply with quote

so i just updated my world and gentoo sources with it i made every steop to upgrade kernel in this order

Code:


eselect kernel list
eselect kernel set x
cd /usr/src/linux
cp ../linux-(old kernel)/.config .
make oldconfig
make prepare
make -j9
make modules_install
make install
genkernel --install initramfs
emerge @module-rebuild
grub-mkconfig -o /boot/grub/grub.cfg
reboot


and after all that i get stuck after grub-mkconfig part

after writing it in terminel i get this output
Code:

insmod: ERROR: could not load module part_msdos: no such file or directory


i have no idea what to do i tried some googling but without help :/
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Muso
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Joined: 22 Oct 2002
Posts: 979
Location: The Holy city of Honolulu

PostPosted: Mon Nov 26, 2018 5:56 pm    Post subject: Reply with quote

Did you mount /boot before make install?

Here's how I do it (nvidia and vmware modules also need to be built against each kernel)

Code:
su
eselect kernel list
eselect kernel set 2
mount /boot
cp /usr/src/linux/.config ~/kernel-config-`uname -r`
cd /usr/src/linux
zcat /proc/config.gz > /usr/src/linux/.config
make syncconfig
make && make modules_install
make install
grub-mkconfig -o /boot/grub/grub.cfg
emerge nvidia-drivers
emerge vmware-modules
umount /boot
reboot

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picarica
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Joined: 11 Aug 2018
Posts: 70

PostPosted: Mon Nov 26, 2018 6:05 pm    Post subject: Reply with quote

Muso wrote:
Did you mount /boot before make install?

Here's how I do it (nvidia and vmware modules also need to be built against each kernel)

Code:
su
eselect kernel list
eselect kernel set 2
mount /boot
cp /usr/src/linux/.config ~/kernel-config-`uname -r`
cd /usr/src/linux
zcat /proc/config.gz > /usr/src/linux/.config
make syncconfig
make && make modules_install
make install
grub-mkconfig -o /boot/grub/grub.cfg
emerge nvidia-drivers
emerge vmware-modules
umount /boot
reboot


i dont have /boot on another partition so i didnt think it was needed
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Jaglover
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Joined: 29 May 2005
Posts: 7089
Location: Saint Amant, Acadiana

PostPosted: Mon Nov 26, 2018 6:12 pm    Post subject: Reply with quote

I'd say your MBR support is not built into kernel and apparently not available in initramfs. Thus, your kernel cannot read the MBR hard drive.

@Muso, you should use emerge @module-rebuild instead, the way you do it you are polluting your world file.
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Muso
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PostPosted: Mon Nov 26, 2018 6:17 pm    Post subject: Reply with quote

Jaglover wrote:
@Muso, you should use emerge @module-rebuild instead, the way you do it you are polluting your world file.


Instead of emerge nvidia-drivers vmware-modules?

Nice to know, thank you.
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John R. Graham
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Location: Somewhere over Atlanta, Georgia

PostPosted: Mon Nov 26, 2018 6:34 pm    Post subject: Reply with quote

Jaglover wrote:
@Muso, you should use emerge @module-rebuild instead, the way you do it you are polluting your world file.
Better yet, or perhaps in addition to that, learn when to use --oneshot.

- John
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Muso
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Joined: 22 Oct 2002
Posts: 979
Location: The Holy city of Honolulu

PostPosted: Mon Nov 26, 2018 7:05 pm    Post subject: Reply with quote

John R. Graham wrote:
Jaglover wrote:
@Muso, you should use emerge @module-rebuild instead, the way you do it you are polluting your world file.
Better yet, or perhaps in addition to that, learn when to use --oneshot.

- John


Thank you for that. I haven't read the portage man page in years, --oneshot is a great solution.
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