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安装 ubuntu 14.04 后，Windows 8 未显示在 grub 中

tag-icon • tag-icon boot grub2
安装 ubuntu 14.04 后，Windows 8 未显示在 grub 中 
 Boot Info Script e7fc706 + Boot-Repair extra info      [Boot-Info 9Feb2015]


============================= Boot Info Summary: ===============================

 => No boot loader is installed in the MBR of /dev/sda.
 => No known boot loader is installed in the MBR of /dev/sdb.

sda1: __________________________________________________________________________

    File system:       vfat
    Boot sector type:  FAT32
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        /EFI/Boot/bootx64.efi /EFI/ubuntu/MokManager.efi 
                       /EFI/ubuntu/grubx64.efi /EFI/ubuntu/shimx64.efi

sda2: __________________________________________________________________________

    File system:       ext4
    Boot sector type:  -
    Boot sector info: 
    Operating System:  Ubuntu 14.04 LTS 
    Boot files:        /boot/grub/grub.cfg /etc/fstab

sda3: __________________________________________________________________________

    File system:       swap
    Boot sector type:  -
    Boot sector info: 

sdb1: __________________________________________________________________________

    File system:       iso9660
    Boot sector type:  Unknown
    Boot sector info: 
    Mounting failed:   mount: /dev/sdb1 already mounted or /mnt/BootInfo/sdb1 busy

sdb2: __________________________________________________________________________

    File system:       vfat
    Boot sector type:  FAT16
    Boot sector info:  According to the info in the boot sector, sdb2 starts 
                       at sector 0. But according to the info from fdisk, 
                       sdb2 starts at sector 1954316. According to the info 
                       in the boot sector, sdb2 has 0 sectors.
    Mounting failed:   mount: /dev/sdb1 already mounted or /mnt/BootInfo/sdb1 busy
mount: /dev/sdb2 already mounted or /mnt/BootInfo/sdb2 busy

答案1

正如您的帖子所示，您的磁盘上没有找到 Windows 安装。

这就是 GRUB 启动菜单没有 Windows 菜单项的原因。

也许您在安装 Ubuntu 时选择将整个磁盘用于 Ubuntu。

您可能会看到 BIOS 条目，因为 /EFI/Boot/bootx64.efi 仍然存在于 sda1 上。

当您想恢复 Windows 时，不幸的是您必须重新安装它。

答案2

尝试

sudo apt-get install os-prober

然后

sudo update-grub

答案3

正如 cl-netbox 所建议的，您可能清除了 Windows。如果您可以在启动菜单中看到 Windows 条目，请尝试从那里访问它。如果它没有启动，那么这是一个确认。

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