Go to: http://www.computeractive.co.uk/hdmanager8/index
Ignore the first line and click on "Click here to register your product".  Then download the file (23 Mb on disk).  This is an older version but a great deal for the price.  It also can be built into UBCD4WIN with a supplied plug-in.

The stealth updates work because the update program is a "trusted" program.  I am having second thoughts about that.  Also, I recently noticed a web site that was being contacted at bootup that appears to be some web content provider called Akamai (the dotted web addresses are hardly logged at all in google, so I had to do a whois to find any reference to them).  I still don't know who has contracted out their services to Akamai, because the initiator only showed as scvhost.  Trustworthy they may be, but I don't like strangers accessing my system - and possibly different ones from time to time - these guys are doing this work on contract from someone.  I have some questions about how secure their systems, software and personnel are.  If I had to guess, it might be M$, just because they have a history of unloading anything to do with servicing customers.  It seems a bit high-handed when they "loan" you the software, and then give any service company access to your computer.  I begin to wonder if I want to have software on my computer that makes my security system look like a seive (I am making a bit of a leap here, but whoever is giving this kind of access without my permission is looking for trouble).