Buenas.
Perdón por el atraco, pero leyendo lo que pone n la linea 2 de mi grub.cfg, no me atrevo a experimentar em vivo, sin consejo previo.
Estoy intentando que el arranque de grub vaya al ultimo sistema utilizado, y por lo que he leído, parece que el set default="${saved_entry}" debería hacerlo, pero no es así.
¿Que tengo mal puesto?.Muchas gracias por adelentado...

Por cierto , que grub llame a mi windows 8 vista es normal?
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
load_env
fi
set default="${saved_entry}"
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
else
menuentry_id_option=""
fi
export menuentry_id_option
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}
function load_video {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
}
if [ x$feature_default_font_path = xy ] ; then
font=unicode
else
insmod part_msdos
insmod ext2
set root='hd0,msdos6'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos6 --hint-efi=hd0,msdos6 --hint-baremetal=ahci0,msdos6 1b1585ef-fa79-4822-8a51-7b73d6a4eef0
else
search --no-floppy --fs-uuid --set=root 1b1585ef-fa79-4822-8a51-7b73d6a4eef0
fi
font="/usr/share/grub/unicode.pf2"
fi
if loadfont $font ; then
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=es_ES
insmod gettext
fi
terminal_output gfxterm
insmod part_msdos
insmod ext2
set root='hd0,msdos6'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos6 --hint-efi=hd0,msdos6 --hint-baremetal=ahci0,msdos6 1b1585ef-fa79-4822-8a51-7b73d6a4eef0
else
search --no-floppy --fs-uuid --set=root 1b1585ef-fa79-4822-8a51-7b73d6a4eef0
fi
insmod gfxmenu
loadfont ($root)/boot/grub/themes/Wifislax/Sans-10.pf2
loadfont ($root)/boot/grub/themes/Wifislax/Sans-12.pf2
loadfont ($root)/boot/grub/themes/Wifislax/Sans-14.pf2
insmod png
set theme=($root)/boot/grub/themes/Wifislax/theme.txt
export theme
set timeout=10
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Wifislax 4.11.1 GNU/Linux' --class wifislax --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-1b1585ef-fa79-4822-8a51-7b73d6a4eef0' {
load_video
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos6'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos6 --hint-efi=hd0,msdos6 --hint-baremetal=ahci0,msdos6 1b1585ef-fa79-4822-8a51-7b73d6a4eef0
else
search --no-floppy --fs-uuid --set=root 1b1585ef-fa79-4822-8a51-7b73d6a4eef0
fi
echo 'Cargando Linux 4.1.3-smp-wifislax ...'
linux /boot/vmlinuz-4.1.3-smp-wifislax root=/dev/sda6 ro nomodeset vga=788 rw
}
submenu 'Opciones avanzadas para Wifislax 4.11.1 GNU/Linux' $menuentry_id_option 'gnulinux-advanced-1b1585ef-fa79-4822-8a51-7b73d6a4eef0' {
menuentry 'Wifislax 4.11.1 GNU/Linux, con Linux 4.1.3-smp-wifislax' --class wifislax --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.1.3-smp-wifislax-advanced-1b1585ef-fa79-4822-8a51-7b73d6a4eef0' {
load_video
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos6'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos6 --hint-efi=hd0,msdos6 --hint-baremetal=ahci0,msdos6 1b1585ef-fa79-4822-8a51-7b73d6a4eef0
else
search --no-floppy --fs-uuid --set=root 1b1585ef-fa79-4822-8a51-7b73d6a4eef0
fi
echo 'Cargando Linux 4.1.3-smp-wifislax ...'
linux /boot/vmlinuz-4.1.3-smp-wifislax root=/dev/sda6 ro nomodeset vga=788 rw
}
menuentry 'Wifislax 4.11.1 GNU/Linux, con Linux 4.1.3-smp-wifislax (modo recuperación)' --class wifislax --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.1.3-smp-wifislax-recovery-1b1585ef-fa79-4822-8a51-7b73d6a4eef0' {
load_video
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos6'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos6 --hint-efi=hd0,msdos6 --hint-baremetal=ahci0,msdos6 1b1585ef-fa79-4822-8a51-7b73d6a4eef0
else
search --no-floppy --fs-uuid --set=root 1b1585ef-fa79-4822-8a51-7b73d6a4eef0
fi
echo 'Cargando Linux 4.1.3-smp-wifislax ...'
linux /boot/vmlinuz-4.1.3-smp-wifislax root=/dev/sda6 ro single
}
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/30_os-prober ###
menuentry 'Windows Vista (loader) (en /dev/sda1)' --class windows --class os $menuentry_id_option 'osprober-chain-2C169E7B169E462C' {
insmod part_msdos
insmod ntfs
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 2C169E7B169E462C
else
search --no-floppy --fs-uuid --set=root 2C169E7B169E462C
fi
chainloader +1
}
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f ${config_directory}/custom.cfg ]; then
source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
Edito:
OOOps, acabo de darme cuenta de que este subforo es para live, lo mismo no era el mejor sitio para preguntarlo. Mil perdones.