This one wasn't an XT model, although it did come with a 10MB hard drive as well as a 360K DS-DD floppy drive, monochrome green screen, 256K of RAM, and IBM PC-DOS 3.1. Took about five minutes to boot, and came with a copy of WordStar for DOS which got me through 4th, 5th and 6th grades.
Middle of 7th grade, one of my mom's friends had just bought herself an IBM ThinkPad, and needed to get rid of her Compaq 286, 40MB hard drive, 14" 640x480 VGA monitor, MS-DOS 5. I only had that computer for about a month, because one of dad's coworkers in computer resources heard about my interest in building computers and dug an Intel 386DX-25 chip, motherboard and 4MB RAM out of company storage, suggested we get the rest of the parts needed to get it running at the San Diego Computer Show. That ended up being the first computer I built.