Dualboot with Mageia

[apiaio]

Hi there.
I have dual boot on sdb with Windows Vista. I have another one 32 GB ssd as sda. Because of increasing popularity of this distro I would like to know why. So I installed Mageia on sda. Everything looks OK, but grub reports

^ror: no such partition

when want to start Mageia from Sabayon. Here i s part of grub.cfg created by grub-menuconfig.

...
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Sabayon GNU/Linux, with Linux x86_64-3.1.0-sabayon' --class sabayon --class gnu-linux --class gn
u --class os {
load_video
insmod gzio
insmod part_msdos
insmod ext2
set root='(hd0,msdos7)'
search --no-floppy --fs-uuid --set=root e8f1fd23-4ad5-43ed-9e2b-fd2ea35135ad
echo 'Loading Linux x86_64-3.1.0-sabayon ...'
linux /kernel-genkernel-x86_64-3.1.0-sabayon ro init=/linuxrc splash=verbose,theme:sabayon vga=791 console=tty1 quiet dokeymap keymap=us resume=swap:/dev/mapper/vg_sabayon-lv_swap real_resume=/dev/mapper/vg_sabayon-lv_swap dolvm root=/dev/mapper/vg_sabayon-lv_root docrypt
echo 'Loading initial ramdisk ...'
initrd /initramfs-genkernel-x86_64-3.1.0-sabayon
}
...
### BEGIN /etc/grub.d/30_os-prober ###
menuentry "linux (on /dev/sda1)" --class gnu-linux --class gnu --class os {
insmod part_msdos
insmod xfs
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set=root 5f57f243-c044-4cc2-8a3b-4d9551add2e5
linux /boot/vmlinuz BOOT_IMAGE=linux root=UUID=5f57f243-c044-4cc2-8a3b-4d9551add2e5 nokmsboot resume=/dev/vg_sabayon/lv_swap
initrd (hd0,0)/boot/initrd.img
}
menuentry "desktop 3.3.8-2.mga2 (on /dev/sda1)" --class gnu-linux --class gnu --class os {
insmod part_msdos
insmod xfs
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set=root 5f57f243-c044-4cc2-8a3b-4d9551add2e5
linux /boot/vmlinuz-3.3.8-desktop-2.mga2 BOOT_IMAGE=desktop_3.3.8-2.mga2 root=UUID=5f57f243-c044-4cc2-8a3b-4d9551add2e5 nokmsboot resume=/dev/vg_sabayon/lv_swap
initrd (hd0,0)/boot/initrd-3.3.8-desktop-2.mga2.img
}

What is wrong?
Thanks

[apiaio]

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