我系统开始装的win7然后想换成XP
用的深度的XP安装盘
但是 安装的时候提示
Starting MS-DOS 7.1...
IDE/ATAPI CD-ROM Device Driver Version 2.14 10:48.22 02/17/98
Error: No CD-ROM Drives detected at all.
Error: Device driver aborts lording.
ASPI CD-ROM Driver for DOS
Version 4.01S
Copyright 1990-1996 Adaptec，Inc.
Microsoft RAMDrive version 3.06 virtual disk C:
Disk size: 4,096k
Sector size: 512 bytes
Allocation unit: 4 sectors
Directory entries: 64
硬件应该没有问题 刚买不久的笔记本 联想Y450
现在能正常进入win7 只有一个C盘
用PQ分区 提示错误117,partition's drive letter cannot be identified
急求解决方法！！！！