@AmigaBruno
Hello there, my apologies for perhaps confusing you with detail, I will try and clear this up for you. but first if I may, I would not recommend those 80MB SCSI HDD's at that price - it is also touch and go if it fitted within the GVP HD8+ casing. To be sincerely honest, I would sooner send you a prepared one for postage cost before I let you suffer those prices.
I should also mention that POWER is very important here, the original GVP A500HD8+ provides 4amps on the +5 rail buy ONLY 0.5amps on the +12v rail. if you try to run a HDD that requires more +12 volt power (like newer SCSI drives) you will destroy the PSU.
Please check your GVP Power Supply, if you are unsure - just take a picture and post it here I am sure either I or a fellow member can help.
_____________________
Now, In ALL my experiments the GVP controller (without GURU-ROM) appears limited to only being able to access 3.67GB of data storage. It can see larger drives and with HDToolsBox you can even create partitions - however any partition that is outside the first 3.67GB does not mount, nor does any partition that spans past this amount.
I.e. Partition HD3: size of [ 1.1GB ] starting at 3GB to 4.1GB spans past this 3.67GB clipping area. I am unsure why, I have been informed that this should not be, however I have tried many disks and many GVP controllers and the above holds true for the following -
Geforce - 040 / Combi 040
Impact A2000 HC
Impact A2000 HC Series II
Impact A2000 HC+8 Series II
Impact A500 HD8+ Series II
I have tried the above on various A2000 / A4000 motherboards as well as an A3000 motherboard.
Now, this isn't a problem, after all one could have a couple of disks and that should easily be most Amiga software published - most certainly all of the best software.
That aside, its very easy to set up a large hard disk to only use the first 3.67GB of space. I would be more than happy to help you - it maybe daunting at first - but once you get the hang of it - it truly is easy.
_____________________
Now, FFS or Fast File System (available with KS2.x) can partition up to 4GB of data in one fat chunk however with the GVP controller this can cause problems, so I would suggest perhaps two or three partitions something like
DH0: 512MB (System) - Workbench Install
DH1: 2.1GB (Games)
DH2: 1GB (Work)
This will certainly give you a great start to getting the most from your A500. I purchased a couple of PC SCSI cards so I could prepare HardDisks on my PC under WinUAE - its much MUCH quicker - if you would like I can help you with your hard-disk.
_____________________
Now a little more information that I think will help you.
SFS - Smart File System
This allows for VERY large partition, 128GB I believe, it also requires a minimum 020 processor - however CPU aside it is 20% faster access than FFS.
PFS3 - Professional File System 3
Now open source (for the most part) PFS3 supports larger Hard Disks as well as large Partition sizes (about 100GB) - it also has optimizations for stock 68000 CPU's all the way up to 040 and 060 processors. Like SFS, PFS3 also provides a speed boost in both accessing the device and transferring data. However this increase is down to the controller, the device and the CPU of the host system.
NSD - New Style Device
This is an older method now - however a lot of devices support this interface (some by a little hacking) to allow direct commands to the device. this allows for larger disk sizes to be supported.
There, I hope that helps, if there is anything thats too complicated or you would like more detail on, please just ask =)