Sorry about the late reply, I wasn't online lately.
I believe that is the endline in linux, maybe it shouldn't be typed unless there is a endline.
In Linux entry it is like:
search --no-floppy --fs-uuid --set d670e7a8-1e2c-41a3-9b2a-e919d3f90\
NeoGrub or Grub4Dos does not see the fifth partition.
Here is my Linux entry.
search --no-floppy --fs -uuid -set d670e7a8-1e2c-41a3-9b2a-e919d3f90\1d9
linux /boot/vmlinuz-2.6.32-21 generic root=UUID=d670e7a8-1e2c-41a3-9\b2a-e919d3f9 ro quiet...
sda1 GPT Protective
sda2 Empty Data Partition
sdb1 GPT Protective
sdb2 Windows 7 Professional x64
sdb3 Windows 7 Ultimate x64
sdb4 OS X x32/x64
sdb5 Linux (also the \boot is here, and the GRUB2 bootloader) x64
Windows sees the Linux partition as unallocated in Disk...