Problem with dual booting Windows 7

Question

Hi!
I've been running Arch for some time now on my laptop, and wanted to get it going on my desktop computer, which was (is) running Windows 7. I followed the guide on the wiki and searched for the problems that occured, but didn't make any progress. After installing grub2 and running the grub-mkconfig. This is how my grub.cfg looks like now:
# 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 ###
insmod part_gpt
insmod part_msdos
if [ -s $prefix/grubenv ]; then
load_env
fi
if [ "${next_entry}" ] ; then
set default="${next_entry}"
set next_entry=
save_env next_entry
set boot_once=true
else
set default="0"
fi
if [ x"${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_gpt
insmod ext2
set root='hd0,gpt4'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4 9bd81756-d741-46bd-8604-5c542ff1125e
else
search --no-floppy --fs-uuid --set=root 9bd81756-d741-46bd-8604-5c542ff1125e
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=sv_SE
insmod gettext
fi
terminal_input console
terminal_output gfxterm
set timeout=5
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Arch Linux, med Linux core repo kernel' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-core repo kernel-true-9bd81756-d741-46bd-8604-5c542ff1125e' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt4'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4 9bd81756-d741-46bd-8604-5c542ff1125e
else
search --no-floppy --fs-uuid --set=root 9bd81756-d741-46bd-8604-5c542ff1125e
fi
echo 'Läser in Linux core repo kernel ...'
linux /boot/vmlinuz-linux root=UUID=9bd81756-d741-46bd-8604-5c542ff1125e ro quiet
echo 'Läser in initial ramdisk ...'
initrd /boot/initramfs-linux.img
menuentry 'Arch Linux, with Linux core repo kernel (Fallback initramfs)' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-core repo kernel-fallback-9bd81756-d741-46bd-8604-5c542ff1125e' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt4'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4 9bd81756-d741-46bd-8604-5c542ff1125e
else
search --no-floppy --fs-uuid --set=root 9bd81756-d741-46bd-8604-5c542ff1125e
fi
echo 'Läser in Linux core repo kernel ...'
linux /boot/vmlinuz-linux root=UUID=9bd81756-d741-46bd-8604-5c542ff1125e ro quiet
echo 'Läser in initial ramdisk ...'
initrd /boot/initramfs-linux-fallback.img
### 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 ###
### 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.
#Windows 7
menuentry "Windows 7" {
set root="(hd0,1)"
chainloader +1
### 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 ###
### BEGIN /etc/grub.d/60_memtest86+ ###
### END /etc/grub.d/60_memtest86+ ###
I'm quite new to this stuff, but when I'm trying to boot Windows 7, it comes back with this:
error: invalid signature
I've tried various different things. Sometimes the error above returns, and sometimes this:
BOOTMGR is missing
Any help is appriciated!

Answer 1

Rydberg95 wrote:
I have os-prober installed and when I run it this returns:
No volume groups found
However, it didn't return this a few hours ago when I ran it in the grub-mkconfig. Back then it return some stuff about the file formats (mostly ext4 and ntfs) and that there was some kind of error with those.
Could be wrong, but I suspect you are using dynamic volumes in Windows 7 (check in Windows: Control Panel > Administrative Tools > Computer Management > Disc Management for current volume type).  You probably need to convert to basic disc type in Windows 7.  I had to do this once to be able to install Fedora.  Unfortunately this is not a trivial undertaking.
http://technet.microsoft.com/en-us/libr … 55238.aspx