在xp下装dos7.10时，
1、用dos7.10启动盘进入dos
2、srcboot c: c:\ntboot_c.dat /s (保存xp引导扇区)
3、sys c:
4、srcboot c: c:\bootsect.dos /s (保存dos引导扇区)
5、srcboot c: c:\ntboot_c.dat /r (恢复xp引导扇区)
第5步出错，提示信息：
dos7.1 has disabled direct disk access to protect your long filenames. To override
this protection, see the LOCK /? command for more information.
The system has been halted. Press ctrl+alt+del to restart your computer.
----Error:Could not write sector
----Quitting...
1、用dos7.10启动盘进入dos
2、srcboot c: c:\ntboot_c.dat /s (保存xp引导扇区)
3、sys c:
4、srcboot c: c:\bootsect.dos /s (保存dos引导扇区)
5、srcboot c: c:\ntboot_c.dat /r (恢复xp引导扇区)
第5步出错，提示信息：
dos7.1 has disabled direct disk access to protect your long filenames. To override
this protection, see the LOCK /? command for more information.
The system has been halted. Press ctrl+alt+del to restart your computer.
----Error:Could not write sector
----Quitting...