manage os-prober output with @

Registered by YannUbuntu

http://paste.ubuntu.com/6690467/

os-prober:
/dev/sda2@/efi/Microsoft/Boot/bootmgfw.efi:Windows Boot Manager:Windows:efi
/dev/sdb3:Ubuntu 13.10 (13.10):Ubuntu:linux

=================== Recommended repair
Recommended-Repair
This setting will reinstall the grub-efi-amd64-signed of sdb3, using the following options: sda2/boot/efi,
Additional repair will be performed: unhide-bootmenu-10s

df: ‘/dev/sda2@/efi/Microsoft/Boot/bootmgfw.efi’: No such file or directory
Could not detect USEDPERCENT of sda2@/efi/Microsoft/Boot/bootmgfw.efi ().
df: ‘/dev/sda2@/efi/Microsoft/Boot/bootmgfw.efi’: No such file or directory

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YannUbuntu
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YannUbuntu

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