А этот конфиг после установки другого ядра, до перезагрузки. (конфиг не изменился)
$ cat /etc/sysconfig/grub2
# Automaticaly update grub on device(s)
# NB: don't put /dev/mdX there but rather '/dev/sda /dev/sdb '!
#GRUB_AUTOUPDATE_DEVICE="/dev/sda"
# Use '--force' option for grub-install
#GRUB_AUTOUPDATE_FORCE="no"
# Automaticaly update config file on kernel install/removal
# default: true
GRUB_AUTOUPDATE_CFG="true"
# Automaticaly updated config filename
# default: /boot/grub/grub.cfg
GRUB_AUTOUPDATE_CFGNAME="/boot/grub/grub.cfg"
# How to handle /boot/vmlinuz* symlinks:
# 'yes','true' - include in config
# 'no','false' - skip in config
# 'default' - include only /boot/vmlinuz in config
# default: default
GRUB_VMLINUZ_SYMLINKS="default"
# Whether to add failsafe entries:
# 'yes','true' - add for all kernels
# 'no','false' - skip for all kernels
# 'default' - add failsafe entry only for /boot/vmlinuz
# default: default
GRUB_VMLINUZ_FAILSAFE="default"
# Preload specific grub modules
#GRUB_PRELOAD_MODULES=''
# Set normal timeout
#GRUB_TIMEOUT="5"
# Set hidden timeout (do not show menu)
#GRUB_HIDDEN_TIMEOUT="3"
# Show timeout counter when hidden
#GRUB_HIDDEN_TIMEOUT_QUIET="TRUE"
GRUB_CMDLINE_LINUX_DEFAULT="resume=/dev/disk/by-uuid/824d722a-a292-4fc9-ac2b-a3f8b0e10ded panic=30 quiet splash"
GRUB_CMDLINE_LINUX="failsafe vga=normal"
GRUB_TERMINAL_OUTPUT="gfxterm"
GRUB_GFXMODE="800x600"
GRUB_DEFAULT="Microsoft Windows XP Professional RU (на /dev/sda1)"
GRUB_SAVEDEFAULT="false"
GRUB_WALLPAPER="/usr/share/plymouth/themes/slinux/grub.jpg"
GRUB_COLOR_NORMAL="white/dark-gray"
GRUB_COLOR_HIGHLIGHT="black/white"
# This is especially important as EFI Boot Manager label
GRUB_DISTRIBUTOR="ALT Linux"
# This defines /boot/efi/EFI subdir name
GRUB_BOOTLOADER_ID="altlinux"
GRUB_THEME="/boot/grub/themes/slinux/theme.txt"
GRUB_AUTOUPDATE_DEVICE="/dev/disk/by-id/ata-ST3250310AS_6RY1W813"
GRUB_AUTOUPDATE_FORCE="no"