是这样的，我希望修复同事的一个SD卡，0磁道死了，需要移动。之前在linux下用dd 也写入不能。。（当然）
所以想到了pctools，linux 上有 vbox，可安装dos7.1之前我是安装过了的，结果开始不支持usb让我给删了（也顺利安装了pctools），又想重新装一个dos7.1,结果就装不上了！？来到安装目录之后说“Cannot install MS-DOS 7.1 to the path 'c:\dos71' “ 我就奇怪了，刚才还好使的这次就不好使了。
我删了vdi重新建，也照样不好使。。每次都让我输入绝对路径，我输入 "c:\" 也白搭，其他路径试了一下也不行。不知道为何。。
另外，我需要在vbox的 dos7.1下识别同事0磁道损坏的sd卡（usb转接口，vbox能识别）。之前从未在dos下使用过，有关设备的驱动，
不知道这个行不 ：
http://www.cn-dos.net/forum/viewthread.php?tid=19232&fpage=1&highlight=usb
各位大侠有什么建议给小弟提提，谢谢。。
This is like this. I hope to repair a colleague's SD card. The track 0 is dead and needs to be moved. I used dd under linux before and couldn't write either. (Of course)
So I thought of pctools. There is vbox on linux. I have installed DOS 7.1 before. The result was that it didn't support USB at the beginning and I deleted it (and installed pctools smoothly). Then I wanted to reinstall DOS 7.1, but it couldn't be installed!? After coming to the installation directory, it said "Cannot install MS-DOS 7.1 to the path 'c:\dos71' " I was strange. It was fine just now but not this time.
I deleted the vdi and rebuilt it, and it's still not fine. Every time I need to enter the absolute path. I entered "c:\" and it was in vain. I tried other paths and it didn't work. I don't know why.
In addition, I need to recognize the colleague's SD card with track 0 damage under DOS 7.1 in vbox (USB adapter, vbox can recognize). I have never used it under DOS before. Regarding the driver of the device,
I don't know if this works:
http://www.cn-dos.net/forum/viewthread.php?tid=19232&fpage=1&highlight=usb
Dear experts, please give me some suggestions, thank you.
