Yesterday, I was reading an ad. in misc.forsale section and saw an ad. 
     of an IDE drive which was exactly same as mine(Micropolis 2217A 1.7 
     Gig IDE).  It stated that the drive's rpm was 5400.  When I took a 
     look at my drive with disklabel -r, it had 3600 for rpm.  Can I change 
     the RPM to 5400 without messing up files? What would be the safest 
     procedure to change it?  Any help or comment would be greatly 
     appreciated.  
     
     Thanks
     
     Kang