It's been a hell of a week. After solving a problem with EasyWrite Reader, I now get to have some fun with InCD 3.5.xx.x...!
Synopsis
I had Intel's Application Accelerator IDE drivers installed on my W98SE system for approx over a year without incident, until, that is, I installed the 3.x version of EasyWrite. Prior to EasyWrite, I had some ancient predecessor installed (which I completely forgot about, lol): InCDUDFReader (used bsudfrdr v2.04-200101181745).
Removing the IAA drivers resolved my problem with EasyWrite but in turn, created a problem with the InCD 3.5.xx.0 series (I tested 3.5.24.0, 3.5.22.0 & 3.5.19.1).
The problem is that W98SE no longer reboots / shuts down completely(I make it to the "Windows is shutting down" screen, than it hangs: upon reboot, Scandisk runs, indicating that indeed, Windows did not properly complete it's shutdown routine).
I tested InCD with the following uninstalled (or disabled):
EasyWrite
Adaptec ASPI 4.71(0002) (swapped out with 4.60)
Lexar USB-enabled Compact Flash drivers
Microsoft Backup Utility (=Seagate DRV*.VXDs)
scsi1hlp.vxd, atapchng.vxd, torisan3.vxd, necatapi.vxd
The only device drivers that are still in use are:
AIC78XX.mpd (Adaptec AVA-2904 SCSI-2 Host Adapter, used in conjunction with my scanners)
Fasttx2k.mpd, Fttkvsd.vsd & Pu66vsd.vsd (used by the ASUS P4PE's onboard Promise 376 Raid controller: I tried various driver versions as well.)
Misc. W98SE VXDs
There is only one exception to this failed shutdown problem: when a new "drive" is added to the system (eg. adding a removable drive, like my USB-enabled CF media), then shutdown proceeds normally - but for only one cycle (all further shutdowns are again problematic).
So, seven days into this & I have three options:
1. IAA + InCD 3.x - but no EasyWrite
2. Std IDE + EasyWrite - but no InCD
3. InCD4.x (which includes EasyWrite "technology") + full load on CPU all of the time.
As the Viennese would say, Na, das ist a Schass"