IDE - Bob Woolley had a nice package in the IDE38.ASM file, but the SIO command, 
GET_CONFIG, was not implemented.  Without that command, established formatting programs couldn't be used.  
Due to the 20-30 byte addition, I was forced to look elsewhere for the HDTABL storage.  
I discovered a 155 byte unused region in the XL/XE OS ROM, located right before the international character set.  
In fact, if you don't need/want the international character set, you have a 1179 byte region of free space starting 
at 0xCB65.  If that area is not available (if you have some other OS revision that uses that area) or not 
satisfactory to you, then just locate an 80 byte area that is fine for you and change the .ASM accordingly.  
This zip file contains an ASCII (edited on my PC) source file and a modified HDINIT.COM (SpartaDOS HD format program).  
OOPS!  HDINIT.COM was not fully patched (only worked on drives 1-7).  Fixed now.