Which CACHE did I disabled???

The system:
motherboard:M571 PcChips
CPU:Cyrix 6×86 Pr 266
128 MBytes SDRAM PC100
AMI BIOS
Maxtor 15.3 GBytes diamondmaxPlus

recently I had to disable cache (internal & external)in BIOS advanced CMOS setup menu to clean install windows 98.It seems that cache failure , because after I disabled it then I manage to install windows on the system.It turn out that the system barely crawling because of disabling the cache.It took long time to boot up.But the problem is I dont know which cache did I disabled..Is it the motherboard? or the CPU? or the harddisk?? I kneed to know so I can replace either one of them.OR am I disabling all the cache?? is there any software to check cache on all this hardware???

thanks..