我有两个硬盘，想组成双系统，双系统都放在第一个硬盘的不同分区里。我用U盘安装了ubuntu11.10，在选引导位置时，第一次误选了第二个硬盘，导致安装失败。由于我是新手，加上准备工作不足。第二次再选引导位置时，又误选了Windows7(loader)那一项。现在的问题有二：1.虽然ubuntu正常，但在进入grub时，虽然有Windows7那一项，但是选了之后闪了一下就回到grub了，什么提示都没有。2.在ubuntu中，读第二个硬盘出错。估计是引导扇区出问题了。求老前辈帮帮新手！！！不胜感激。

都快停止支持了，还10.10

打错了，已更正

终端运行：
把RESULTS.txt文件内容贴上来。

Boot Info Script 0.55 dated February 15th, 2010

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

=> Windows is installed in the MBR of /dev/sdb

sdb1: _________________________________________________________________________

File system: ntfs
Boot sector type: Unknown
Boot sector info: No errors found in the Boot Parameter Block.
Operating System: Windows 7
Boot files/dirs: /bootmgr /boot/bcd /Windows/System32/winload.exe

sdb2: _________________________________________________________________________

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

sdb5: _________________________________________________________________________

File system: ntfs
Boot sector type: Windows XP
Boot sector info: According to the info in the boot sector, sdb5 starts
at sector 63.
Operating System:
Boot files/dirs: /bootmgr /Boot/BCD

sdb6: _________________________________________________________________________

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

sdb7: _________________________________________________________________________

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

sdb8: _________________________________________________________________________

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

sdb9: _________________________________________________________________________

File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 11.10
Boot files/dirs: /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img

sdb10: _________________________________________________________________________

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

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

Drive: sdb ___________________ _____________________________________________________

Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes

Partition Boot Start End Size Id System

/dev/sdb1 * 63 122,897,249 122,897,187 7 HPFS/NTFS
/dev/sdb2 122,897,311 976,768,064 853,870,754 f W95 Ext d (LBA)
/dev/sdb5 122,897,313 245,778,434 122,881,122 7 HPFS/NTFS
/dev/sdb6 245,778,498 544,523,174 298,744,677 7 HPFS/NTFS
/dev/sdb7 544,523,238 857,356,919 312,833,682 7 HPFS/NTFS
/dev/sdb8 857,356,983 865,903,499 8,546,517 82 Linux swap / Solaris
/dev/sdb9 865,904,640 964,339,711 98,435,072 83 Linux
/dev/sdb10 964,341,760 976,771,071 12,429,312 82 Linux swap / Solaris

the logical partition /dev/sdb10 is not contained in the extended partition /dev/sdb2

blkid -c /dev/null: ____________________________________________________________

Device UUID TYPE LABEL

/dev/sdb10 f4b7e65f-9f36-4d81-9b4e-c585f2f1db3c swap
/dev/sdb1 2498CB1498CAE400 ntfs
/dev/sdb2: PTTYPE="dos" PART_ENTRY_SCHEME="dos" PART_ENTRY_TYPE="0xf" PART_ENTRY_NUMBER="2"
/dev/sdb5 CF589433FF8A3BB9 ntfs
/dev/sdb6 0A3C6107FF2EA310 ntfs
/dev/sdb7 3FFCAF2DFEB8DEC9 ntfs
/dev/sdb8 ad1d0f90-af9a-429e-a84f-dabe6ffd453e swap
/dev/sdb9 4c0ece38-8ae7-41bd-96b5-0c8768c437e3 ext4
/dev/sdb: PTTYPE="dos"

============================ "mount | grep ^/dev output: ===========================

Device Mount_Point Type Options

/dev/sdb9 / ext4 (rw,errors=remount-ro,commit=0)
/dev/sda1 /media/新加卷 fuseblk (rw,nosuid,nodev,allow_other,blksize=4096,default_permissions)
/dev/sdb5 /media/CF589433FF8A3BB9 fuseblk (rw,nosuid,nodev,allow_other,blksize=4096,default_permissions)
/dev/sdb6 /media/0A3C6107FF2EA310 fuseblk (rw,nosuid,nodev,allow_other,blksize=4096,default_permissions)
/dev/sdb7 /media/3FFCAF2DFEB8DEC9 fuseblk (rw,nosuid,nodev,allow_other,blksize=4096,default_permissions)
/dev/sdb1 /media/2498CB1498CAE400 fuseblk (rw,nosuid,nodev,allow_other,blksize=4096,default_permissions)


=========================== sdb9/boot/grub/grub.cfg: ===========================

第三条私信看了吗？我怕出问题，先问下

又看了一下，没什么问题。

[email protected]:~/桌面$ sudo grub-install /dev/sdb
[sudo] password for hsf:
Sorry, try again.
[sudo] password for hsf:
/usr/sbin/grub-setup：警告： Sector 49 is already in use by FlexNet; avoiding it. This software may cause boot or other problems in future. Please ask its authors not to store data in the boot track.
Installation finished. No error reported.
[email protected]:~/桌面$ sudo grub-install /dev/sdb
/usr/sbin/grub-setup：警告： Sector 49 is already in use by FlexNet; avoiding it. This software may cause boot or other problems in future. Please ask its authors not to store data in the boot track.
Installation finished. No error reported.
[email protected]:~/桌面$ sudo update-grub
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-3.0.0-16-generic
Found initrd image: /boot/initrd.img-3.0.0-16-generic
Found linux image: /boot/vmlinuz-3.0.0-12-generic
Found initrd image: /boot/initrd.img-3.0.0-12-generic
Found memtest86+ image: /boot/memtest86+.bin
head: 读取"/dev/sda1" 时出错: 输入/输出错误
Found Windows Recovery Environment (loader) on /dev/sdb1
Found Windows 7 (loader) on /dev/sdb5
done
[email protected]:~/桌面$ sudo dd if=/dev/sdb of=/dev/sdb bs=512 count=1 seek=63 skip=122897249
记录了1+0 的读入
记录了1+0 的写出
512字节(512 B)已复制，0.0258513 秒，19.8 kB/秒

不清楚你49扇区被那个win下的软件用了，现在grub2 安装到这里了，49扇区如果被win下程序重写就没办法引导ubuntu和win了，先这样用吧。

没动你的sda硬盘。

重启试试。

重启了，进入win7后，出现这样的字符：Y+一个无穷远符合+Y+一个无穷远符合

这个FlexNet是个什么软件啊？我没有安装和运行啊

这个选项是进win7的。
不知道为什么还有

你试的是那个？

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搜了一下是上面内容，没用就别用了，重写扇区 Sector 49。没用就卸载。

我试的是Found Windows 7 (loader) on /dev/sdb5