I found this web site and made me boot up my old Tandy 1000 TL and TL/2! Well the TL booted up fine, but the TL/2 the HDD failed. I had a 2nd HDD of the same type:"WD93028-1 20Mb" but found that one had a bad control PCB.
I since tried several other under 45Mb Hdd's(ST-157a 44MB and Maxtor...