I my be wrong, I am just going by my own past experience and setting up hard drives in many DAs for others.
Again... I was referring to the DA MB controller and the native setup, although the HDST driver will allow you write data past 128GB, just keep in mind it is a software driver and NOT a function of the Hardware. The stock G4 DA controller has a hardware limitation of basically 130GB unless you use software to do the job of firmware. This is a great feature of HDTS, but it is NOT a native feature of the hardware on you DA motherboard. It is not like Apple had this secret agenda and HDTS discovered that there is no hardware limitation... they simply had really good programmers. As a conservative, Software drivers / Dynamic drive overlays, scare me a little and I have always tried to keep things universal and NOT use them. I suspect their algorithm will only work on 1 single partition, since you have mentioned there is no mulch-partition option
For instance... the DA now has 150GB of stuff and it has a MB failure and now you put the drive in FW case and pug it into another DA....
1) Does HDTS need to be installed on the New DA before you attempt to read data on the drive....?
2) If you forget to install HDST will OS 9 not understand the partition and ask to reformat the drive... or worse corrupt it in 5 seconds...
Also, Does the system suffer and performance issues when there is 150GB of data using the HDTS driver... ?
All these variables have to be tested and
I have always went the "safe" route with other people's data. So if I do not have the time to test all the "what if"s, then I choose the know tested route. If I am "wrong" in your eyes... then so be it.
Since HDTS allows only allows you to only make 1 partition (and you can make it any size), then the max I would do is 190GB and not the whole drive... Then I would test the scenario of filling the drive to about 150GB and run disk first aid and defrag before I put critical stuff on it.
A second test is make 1 partition of 400GB, load about 200GB of crap and attempt first aid or a defrag.... I will SUSPECT (but could be wrong) that you will get "out of memory error" as I have in the past and you may have data issues....if I am wrong, then we will have to get your information posted for others and exactly how you...
Forum data was restored after a crash... rest of this post is missing...