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I have got an issue in Windows 8 (x64 home edition on Asus N56VZ) but I'm sure you can help me! The USB keys are not recognized in the boot menu after doing this operations:

1 - installed ubuntu 12.10 live on a usb key

2.1 - disabilited UEFI Secure Boot

2.2 - run ubuntu live and installed it on a SD card device. I set the grub installation point on the same SD CARD

3 - The MBR has been modified. Windows starts as default OS but in the grub menu ther's now the Ubuntu choice (from HD, not SD Card)

4.1 - Removed the Ubuntu's Boot option from UEFI but at restart the option is visible again

4.2 - The USB boot option was still working

5 - Win8 sees USB keys with the SD cards icon but they're still recognized as USB device in device's property

6 - Recovery the MBR trying to solve problem 4.1

7 - USB keys (and SD cards) aren't seen un the boot menu anymore.

Can anyone help me?

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migrated from stackoverflow.com Apr 16 '13 at 12:18

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Where's the programming part of this question? Or has the FAQ been removed from SO? –  H2CO3 Apr 16 '13 at 11:00
    
Can you boot the same pendrive on another PC? –  gronostaj Apr 16 '13 at 12:27
    
Yes, i can. I have the same problem with two different usb keys. –  user2286106 Apr 16 '13 at 15:34

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