I have just upgraded two machines, an Athlon and a Duron, from 8.1 to 9.0, solving a number of problems. Incidentally YOU performed magnificently and managed to solve nVIDIA problems that plaguing me the entire time I was using 8.0/8.1. For some reason, however, the Duron seems to think that I have hdd in place, although hdd isn't detected during the boot process. I have three HD's on the platform, hda, hdb and hdc. Also, hdc generates bunches of error messages during boot. The installer didn't find hdc during the clean installation, I had to manually add it to fstab. It sounds as if hdc is having a hardware problem, but why does the system think that there is a hdd? The fourth slot on the interface is the CD which works without any problems. Comments will be appreciated. Thanks in advance, Stephen P. Molnar, Ph.D. Life is a fuzzy set Foundation for Chemistry Multivariant and stochastic http://web.jadeinc.com/FoundationChem