After installing Sabayon, Sabayon took over the boot process. I have reinstalled grub with

sudo grub-install /dev/sda

which I got from ubuntu wiki grub2

Sabayon is an lvm on sda8 and sda9 see below.

sayth@sayth-TravelMate-5740G[~]

[22:03]:fdisj -l

zsh: correct 'fdisj' to 'fdisk' [nyae]? y



Disk /dev/sda: 500.1 GB, 500107862016 bytes

255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x104abfd7



   Device Boot      Start         End      Blocks   Id  System

/dev/sda1   *        2048    27265023    13631488   27  Hidden NTFS WinRE

/dev/sda2        27265024    27469823      102400    7  HPFS/NTFS/exFAT

/dev/sda3        27469824   786911894   379721035+   7  HPFS/NTFS/exFAT

/dev/sda4       786913218   976768064    94927423+   5  Extended

/dev/sda5       786913280   812302335    12694528   83  Linux

/dev/sda6       812304384   816254975     1975296   82  Linux swap / Solaris

/dev/sda7       816257024   871153663    27448320   83  Linux

/dev/sda8       871155712   872179711      512000   83  Linux

/dev/sda9       872181760   976766975    52292608   8e  Linux LVM

However when you update-grub2 it doesn't detect that Sabayon exists, how can I fix this?

Edit I also then tried to redo it using grub-customizer but it just doesn't seem to detect it.

2nd Edit: I think from reading around it doesn't like /dev/sda8 as its a boot partition for the lvm on sda9. It flat out will not recognise it.