有时候，电脑为了短期干一个linux环境的项目，常常在电脑上装个linux环境，用几天后，又想卸载了重新装windows，可是现在装windows，为了省事，大家总是喜欢用ghost，结果发现ghost之后，系统无法引导，因为ghost后，虽然格式化磁盘，但并没有重写mbr引导分区
方法：
一、windows 光盘： 将Windows的安装盘放入计算机以后，重启计算机，进入Windows安装程序，随后，按R键进入恢复控制台，出现C:/windows之后，输入命令fixmbr即可。然后Y确定，即可。
二、mbrfix 1、下载mbrfix http://www.sysint.no/Download/tabid/162/Default.aspx （MBRFix ） 或者见附件
2、解压 将压缩包（mbrfix.zip）解压至系统根目录 C:\
3、修复mbr a.使用Windows PE光盘启动，进入系统 b.进入cmd命令窗口 c.然后进入mbrfix工具所在的目录
引用:
cd \
d.运行mbrfix修复命令
windows XP
引用:
MBRFix /drive 0 fixmbr /yes
windows vista
引用:
MbrFix /drive 0 fixmbr /vista /yes
附：MBRFix命令：（参考：http://www.sysint.no/nedlasting/mbrfix.htm）
引用:
MbrFix /drive <num> driveinfo Display drive information MbrFix /drive <num> drivesize Returns drive size in MB as return value MbrFix /drive <num> listpartitions Display partition information MbrFix /drive <num> savembr <file> Save MBR and partitions to file MbrFix /drive <num> restorembr <file> Restore MBR and partitions from file MbrFix /drive <num> fixmbr {/vista} Update MBR code to W2K/XP/2003 or Vista MbrFix /drive <num> clean Delete all partitions in MBR MbrFix /drive <num> readsignature {/byte} Read disk signature from MBR MbrFix /drive <num> writesignature <hex> Write disk signature to MBR MbrFix /drive <num> generatesignature Generate disk signature in MBR MbrFix /drive <num> readstate Read state from byte 0x1b2 in MBR MbrFix /drive <num> writestate <state> Write state to byte 0x1b2 in MBR MbrFix /drive <num> readdrive <startsector> <sectorcount> <file> Save sectors from drive to file MbrFix /drive <num> /partition <part> fixbootsector <os> Update Boot code in boot sector MbrFix /drive <num> /partition <part> getpartitiontype Get partition type MbrFix /drive <num> /partition <part> setpartitiontype <typenum> Set partition type MbrFix /drive <num> /partition <part> setactivepartition Set active partition MbrFix /drive <num> getactivepartition Get active partition MbrFix volumeinformation driveletter Get volume information for partition MbrFix flush {driveletter(s)} Flush files to disk for partition MbrFix listpartitiontypes List partition types
Drive numbering <num> starts on 0. Partition numbering <part> starts on 1.
Commands restorembr, fixmbr, generatesignature, writestate, clean, setactivepartition and fixbootsector will ask for confirmation unless /yes is included.
If the /byte option is given for the readsignature command, the signature is returned as a byte array instead of as a DWORD. Writesignature requires the new signature to be specified as 8 hex digits.
If /vista is used with the fixmbr command, a Windows Vista MBR is written instead of a Win2000/XP/2003 MBR. The Vista MBR should work with the other OS'es as well.
Drive numbering <num> starts on 0. Partition numbering <part> starts on 1.
Commands restorembr, fixmbr, generatesignature, writestate, clean, setactivepartition and fixbootsector will ask for confirmation unless /yes is included.
If the /byte option is given for the readsignature command, the signature is returned as a byte array instead of as a DWORD. Writesignature requires the new signature to be specified as 8 hex digits.
If /vista is used with the fixmbr command, a Windows Vista MBR is written instead of a Win2000/XP/2003 MBR. The Vista MBR should work with the other OS'es as well.