And the other important limitation to remember is 2GB limitation per partition.
There is no such limit.
Not true, either.
Going out the scope of the question: you can use any HD up the Petabytes!!!
With the currently available patches and softwares drives bigger than 2 TB will not be recognised. (2^32 blocks of 512 bytes each.)
but without a lot of patches the Amiga will not even boot.
If it does not boot without patches, then it won't boot with patches, either. At boot time the only driver available is the one in Kickstart. If it is not able to boot the HDD, then patches cannot be applied and booting is not possible.
And remember to patch the SCSI.device itself to use a HD with more than 127Gb.
It's 128 GB. And you don't need a patch to connect and use bigger drives. The system will only crash if you create partitions above the 128 GB border. And you can disable the crashing partition in the early startup menu.
Bye,
Thomas