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I have an ASUS UX-32A with Windows 8 Pro. I installed Ubuntu 12.04.02 amd64 and it installed OK & rebooted to Ubuntu. Thought my Win 8 was gone. I rebooted and went into the BIOS and it had Ubuntu as first on boot order. Then I changed the order to Windows8 & it came up with the dual boot screen. When I selected Ubuntu I got the error couldn't find wubldr.mbr. So I ran Easy BCD2.2Pro and here's the boot order listing. I also checked the BIOS settings & Secure Boot is disabled. What do I need to do to get back my Win8 dual boot screen working into Ubuntu?

There are a total of 4 entries listed in the bootloader:

Default: Windows 8
Timeout: 10 seconds
EasyBCD Boot Device: C:\

Entry #1
Name: ubuntu
BCD ID: {517858fe-a6ca-11e2-bea7-806e6f6e6963}
Device: \Device\HarddiskVolume1
Bootloader Path: \EFI\ubuntu\grubx64.efi

Entry #2
Name: ubuntu
BCD ID: {517858ff-a6ca-11e2-bea7-806e6f6e6963}
Device: \Device\HarddiskVolume1
Bootloader Path: EFI\Ubuntu\grubx64.efi

Entry #3
Name: Windows 8
BCD ID: {current}
Drive: C:\
Bootloader Path: \Windows\system32\winload.efi

Entry #4
Name: Ubuntu
BCD ID: {f1cf45f4-1767-11e2-bf36-8e0d9bb4a6c3}
Drive: C:\
Bootloader Path: \ubuntu\winboot\wubildr.mbr
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