Thank you for the reply, and please pardon my errors.

I typed it in once, wrong, then copied it.

The partition size should have been 13,160 Mbytes, or about 13 Gbytes. This should have been sufficient.

I am sort of fastidious about fiddling with the MBR. I had some bad experiences with dual booting from a Caldera Open Linux CD a few years ago, and now I am gun-shy.

Every time I change something and close QT-Parted, I log out and hard boot.