Amiga 500 Hdtoolbox and whdload problems

[CSixx]

Try setting the NoAutoVec tooltype on one of the games that crashes with the AUTOVECTOR error.

I also see you are missing the kickstart images, which causes the other error listed.
You need some additional rom files in DEVS:kickstarts, should be able to google these.

Also, in your sysinfo above it says:
SYSINFO 68030, 68882,(68030 not in use)

Do you have the turbo switch on the front of the a530 enabled?

[CSixx]

The problems you've listed are not related to maxtransfer settings.
However, if you want to mess with HDToolbox, you need to change the tooltypes that tell it what .device to use. (looks like you are using gvpscsi.device)

change the following tooltype in hdtoolbox:
SCSI_DEVICE_NAME=gvpscsi.device

Then it should find your drive and you can follow the maxtransfer instructions found by doing a search.

[CSixx]

I'd expect that to affect more than just whdload, but I've been wrong before.
Either way, the instructions are above to make your drive work in hdtoolbox, then you can check your maxtransfer.