efibootmgr help

Thursday, 27 August 2015

ok, I am running fedora 22, along with ubuntu & Windows 10. a new kernel
got installed last night, and I rebooted, but grub doesn't show it, and
still defaults to the ubuntu OS. I am new to this efibootmgr, and google
is letting me down.. This is all new to me, and I am having a problem
understanding what I need to do now...

#df -h
/dev/sda10       46G  8.3G   36G  19% /
/dev/sdb6       154G   80G   67G  55% /home
/dev/sda8        95M  9.5M   86M  11% /boot/efi

grub2-mkconfig works, but grub2-install /dev/sda gives me an error
grub2-install /dev/sda
grub2-install: error: /usr/lib/grub/x86_64-efi/modinfo.sh doesn't exist.
Please specify --target or --directory.

this shows that the default is ubuntu. all I want is to update this & make the newest
fedora kernel the default.
# efibootmgr -v
BootCurrent: 0004
Timeout: 0 seconds
BootOrder: 0004,0003,0000,0001
Boot0000* P0: WDC WD10EZEX-75M2NA0          BBS(17,,0x0)
Boot0001* P4: TSSTcorp DVD+/-RW SH-216DB    BBS(19,,0x0)
Boot0002* Fedora   
HD(8,GPT,ac2fc695-5de9-47d0-a19b-01e236404130,0x5ae5d800,0x2f800)/File(\EFI\fedora\shim.efi)
Boot0003* Windows Boot Manager   
HD(1,GPT,4cc2fdac-58ea-400c-8ef9-11e13499addf,0x800,0xfa000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}...9................
Boot0004* ubuntu   
HD(1,GPT,4cc2fdac-58ea-400c-8ef9-11e13499addf,0x800,0xfa000)/File(\EFI\ubuntu\shimx64.efi)
Boot000C* UEFI OS   
HD(1,GPT,4cc2fdac-58ea-400c-8ef9-11e13499addf,0x800,0xfa000)/File(\EFI\BOOT\BOOTX64.EFI)
Boot0016* UEFI OS   
HD(8,GPT,ac2fc695-5de9-47d0-a19b-01e236404130,0x5ae5d800,0x2f800)/File(\EFI\BOOT\BOOTX64.EFI)
Boot001A* ubuntu   
HD(1,GPT,4cc2fdac-58ea-400c-8ef9-11e13499addf,0x800,0xfa000)/File(\EFI\Ubuntu\grubx64.efi)

#efibootmgr -o 0004,0003,0000,0001
BootCurrent: 0004
Timeout: 0 seconds
BootOrder: 0004,0003,0000,0001
Boot0000* P0: WDC WD10EZEX-75M2NA0
Boot0001* P4: TSSTcorp DVD+/-RW SH-216DB
Boot0002* Fedora
Boot0003* Windows Boot Manager
Boot0004* ubuntu
Boot000C* UEFI OS
Boot0016* UEFI OS
Boot001A* ubuntu

is there a good manual somewhere for efibootmgr??
I thought when a new kernel was installed, grub would automagically add
it... not with efi?

-- 
Paul Cartwright
Registered Linux User #367800 and new counter #561587