没有这样的分区grub救援-在windows升级之后

Question

我的笔记本电脑上安装了Windows7和Ubuntu14.04。

Windows需要更新，但由于出现错误而失败。

我的笔记本电脑有一个还原到工厂安装选项，我尝试过。这也出了问题。现在，当我启动时，我会得到“没有这样的分区grub救援”。

下面是一个引导记录的输出(据我所知，这将显示出您需要帮助我解决问题)。

注意:我已经从USB键启动了。预先感谢您的任何帮助/建议。

                   Boot Info Script 0.61      [1 April 2012]


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

 => Grub2 (v1.99) is installed in the MBR of /dev/sda and looks at sector 1 of 
    the same hard drive for core.img. core.img is at this location and looks 
    in partition 112 for .
 => Syslinux MBR (4.04 and higher) is installed in the MBR of /dev/sdb.

sda1: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows Vista/7: NTFS
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        /bootmgr /Boot/BCD

sda2: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows Vista/7: NTFS
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  Windows 7
    Boot files:        /Windows/System32/winload.exe

sda3: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows Vista/7: NTFS
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        

sda4: __________________________________________________________________________

    File system:       Extended Partition
    Boot sector type:  -
    Boot sector info: 

sda5: __________________________________________________________________________

    File system:       
    Boot sector type:  -
    Boot sector info: 
    Mounting failed:   mount: unknown filesystem type ''

sdb1: __________________________________________________________________________

    File system:       vfat
    Boot sector type:  SYSLINUX 4.05 20140113
    Boot sector info:  Syslinux looks at sector 511 of /dev/sdb1 for its 
                       second stage. SYSLINUX is installed in the  directory. 
                       The integrity check of the ADV area failed. No errors 
                       found in the Boot Parameter Block.
    Operating System:  
    Boot files:        /boot/grub/grub.cfg /syslinux/syslinux.cfg 
                       /efi/BOOT/grubx64.efi /ldlinux.sys

============================ Drive/Partition Info: =============================

Drive: sda _____________________________________________________________________

Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes

Partition  Boot  Start Sector    End Sector  # of Sectors  Id System

/dev/sda1    *          2,048       821,247       819,200  27 Hidden NTFS (Recovery Environment)
/dev/sda2             821,248    62,261,247    61,440,000   7 NTFS / exFAT / HPFS
/dev/sda3          62,261,248    82,741,247    20,480,000   7 NTFS / exFAT / HPFS
/dev/sda4          82,743,294   625,141,759   542,398,466   5 Extended
/dev/sda5         609,517,568   625,141,759    15,624,192  82 Linux swap / Solaris


Drive: sdb _____________________________________________________________________

Disk /dev/sdb: 2000 MB, 2000683008 bytes
64 heads, 47 sectors/track, 1299 cylinders, total 3907584 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes

Partition  Boot  Start Sector    End Sector  # of Sectors  Id System

/dev/sdb1    *          3,616     3,907,583     3,903,968   6 FAT16


"blkid" output: ________________________________________________________________

Device           UUID                                   TYPE       LABEL

/dev/loop0                                              squashfs   
/dev/sda1        EAC60D4BC60D1989                       ntfs       SYSTEM
/dev/sda2        CE1810AF18109893                       ntfs       WINDOWS
/dev/sda3        38EE9AC7EE9A7D36                       ntfs       Data
/dev/sdb1        30EE-D219                              vfat       

================================ Mount points: =================================

Device           Mount_Point              Type       Options

/dev/loop0       /rofs                    squashfs   (ro,noatime)
/dev/sdb1        /cdrom                   vfat       (ro,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)


=========================== sdb1/boot/grub/grub.cfg: ===========================

--------------------------------------------------------------------------------

if loadfont /boot/grub/font.pf2 ; then
    set gfxmode=auto
    insmod efi_gop
    insmod efi_uga
    insmod gfxterm
    terminal_output gfxterm
fi

set menu_color_normal=white/black
set menu_color_highlight=black/light-gray

menuentry "Try Ubuntu without installing" {
    set gfxpayload=keep
    linux   /casper/vmlinuz.efi  file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash --
    initrd  /casper/initrd.lz
}
menuentry "Install Ubuntu" {
    set gfxpayload=keep
    linux   /casper/vmlinuz.efi  file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash --
    initrd  /casper/initrd.lz
}
menuentry "OEM install (for manufacturers)" {
    set gfxpayload=keep
    linux   /casper/vmlinuz.efi  file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash oem-config/enable=true --
    initrd  /casper/initrd.lz
}
menuentry "Check disc for defects" {
    set gfxpayload=keep
    linux   /casper/vmlinuz.efi  boot=casper integrity-check quiet splash --
    initrd  /casper/initrd.lz
}
--------------------------------------------------------------------------------

========================= sdb1/syslinux/syslinux.cfg: ==========================

--------------------------------------------------------------------------------
# D-I config version 2.0
include menu.cfg
default vesamenu.c32
prompt 0
timeout 50
ui gfxboot bootlogo
--------------------------------------------------------------------------------

=================== sdb1: Location of files loaded by Grub: ====================

           GiB - GB             File                                 Fragment(s)


================= sdb1: Location of files loaded by Syslinux: ==================

           GiB - GB             File                                 Fragment(s)


============== sdb1: Version of COM32(R) files used by Syslinux: ===============

 syslinux/chain.c32                 :  COM32R module (v4.xx)
 syslinux/gfxboot.c32               :  COM32R module (v4.xx)
 syslinux/vesamenu.c32              :  COM32R module (v4.xx)

=============================== StdErr Messages: ===============================

./bootinfoscript: line 1646: [: 2.73495e+09: integer expression expected
cat: /tmp/BootInfo-BPZQv9Hh/Tmp_Log: No such file or directory
cat: /tmp/BootInfo-BPZQv9Hh/Tmp_Log: No such file or directory
  No volume groups found

Answer 1

有一行表示包含Linux的分区可能存在问题：

Mounting failed:   mount: unknown filesystem type ''

您可以尝试挂载它，然后重新安装GRUB。如果/dev/sda5确实是您的Linux分区(或者如果您有一个/boot分区，则使用该分区)，那么在活动介质中打开一个终端并尝试以下*：

sudo mount /dev/sda5 /mnt
sudo grub-install --boot-directory=/mnt/boot /dev/sda

现在重新启动时，您应该没有任何问题地获得Ubuntu。如果发现由于没有启动菜单而无法启动Windows，则从终端中的启动Ubuntu运行

sudo update-grub

这将检测Windows引导程序，并向GRUB引导菜单添加相应的条目。

• 如果分区未能挂载，就会以某种方式损坏它，可能需要重新安装Linux。