On this link you will find very much about 060 Processor. Okay, it's about an Blizzard 1260, but there are some information that you need to know.
http://www.geocities.com/Area51/1739/1260.htmlDo you have installed the 060 libraries?
if you don't install, then your 2060 will crash like what you described.
Get the new libraries from
http://phase5.a1k.org/ and download the Blizzard 2060 manual to read more about your fastest Blizzard 2060.
Here some instructions:
First turn off your A2000,remove the card and install the 060 libraries.
Copy the CD of AmigaOS 3.9 to your HD.
Turn Off your A2000, put the 2060 card back your A2000.
Open HDtoolbox and look for someting about 2060SCSI.device (I don't know if this SCSI device is that exact name.)
Assign the AmigaOS 3.9 drawer.
Run the setup installing AmigaOS 3.9 and choose to install the CD driver.