I cannot boot my computer. It is windows xp I am now on recovery console. I need to copy i386 from usbkey to drive c:. Unfortunately xcopy is not recognized. I try Help to see list of command. Xcopy is not in. How could I bring xcopy? Or where could the command be located?

Unfortunately Xcopy command is not a supported command in Windows XP Recovery console according to THIS MSKB. Additionally, Recovery console will load only some of the drivers for your hardware, such as floppy disk, hard disk, and CD-ROM drive. Anything else beside those drivers (i.e., USB) is not supported or loaded according to this M$ Support WebCast. In case you want to know why is this so, Fred Langa provided the best explanation for it. Quoted: Windows XP's Recovery Console is a very restricted version of XP that's been stripped to its barest fundamentals--it's got just enough to get the operating system going, with none of the usual bells and whistles. This skeletal version of the operating system is intended to effect repairs and perform low-level maintenance. Perhaps we can help if you will give us more details of the problem you have encountered. i_Xp/VistaUser

What problem are you having specifically? Perhaps you can do an XP Repair. Life's more painless for the brainless.