后来安装之后，发现我的本子用ubuntu会过热，所以想装回xp，但是用系统盘安装时候发现只一个大的150g多一点的整体硬盘。我就试着找原来d:/分区中的文件，发现也找不到。后来在网上搜索才发现可能是重复安装下的引导问题？？
我试着安装testdisk，可是并没有deeper search的命令或者我还不会用
，现在把系统的信息附上，麻烦大家帮我看看是不是还有救？？要怎么弄？我看了 billbear的帖子"千奇百怪的分区表错误",可是我水平还不够，找不到是不是对应我的问题。谢谢！！
ps: 我只有一个硬盘。安装的是ubuntu12.1。现在为止除了系统升级，还没有下载什么主要的东西，不知道这样算不算硬盘还没有新写入。
--------------------------------------------我是系统信息的结果--------------------------------------------------------------------
Boot Info Summary: ==============================
=> Grub1.97 is installed in the MBR of /dev/sda and looks at sector 8126698
on boot drive #-127 for core.img, but core.img can not be found at this
location.
sda1: _________________________________________________________________________
File system: ext2
Boot sector type: -
Boot sector info:
Operating System:
Boot files/dirs: /grub/grub.cfg
sda2: _________________________________________________________________________
File system: Extended Partition
Boot sector type: Unknown
Boot sector info:
sda5: _________________________________________________________________________
File system: LVM2_member
Boot sector type: -
Boot sector info:
=========================== Drive/Partition Info: =============================
Drive: sda ___________________ _____________________________________________________
Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders, total 312581808 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
Partition Boot Start End Size Id System
/dev/sda1 * 2,048 499,711 497,664 83 Linux
/dev/sda2 501,758 312,580,095 312,078,338 5 Extended
/dev/sda5 501,760 312,580,095 312,078,336 8e Linux LVM
blkid -c /dev/null: ____________________________________________________________
/dev/sda1: UUID="0090cbcf-a8b1-4e52-868e-d7039ef68d24" TYPE="ext2"
/dev/sda5: UUID="kLhNn8-8k6A-EpaY-eKts-kpXP-WHKR-nYqk7z" TYPE="LVM2_member"
/dev/mapper/ubuntu-root: UUID="1bdbbede-6755-4d6f-b9f0-5c2e7daf0e21" TYPE="ext4"
/dev/mapper/ubuntu-swap_1: UUID="48378865-1902-46ec-adff-9a4d1e6d6fd6" TYPE="swap"