80gb hardisk on the A1200 help

[thomas]

Mask does not depend on the file system but on the controller. For the internal IDE controller 0x7ffffffe is a good mask.

[Fabie]

Ok after tons of problems and experiments here is the final partition set of my new 80gb hardisk

The pictures shows a screenshot of the program Check4gb were the program says it not ok but it is OK and works wonderfully

Conclusions:

the best filesystem for the Amiga is by far PFS3 direc scsi
it support big partitions and do not need any new scsi device like the others like FFS 43 and 45 or SFS any version
as anybody can see on the screenshot...there is not any resident scsi device in memory......and the partition is 68gb
it is the normal scsi.device in rom v37 froms roms 3.0
the other screenshot show sysinfo' result speed of the hardisk...about 2.4mb/s which is really fast for the Amiga internal ide
have fun

[thomas]

You've fooled yourself. NSDPatch makes it look ok, but it isn't. The original scsi.device can only access the first 8GB of the drive. NSDPatch does not change this. PFS3 stores all its directory information in the beginning of the partition, it does not check if the partition is entirely accessible. Your DH3 partition will fail as soon as you fill it with more than ~2GB of data.

[Fabie]

Originally Posted by thomas

You've fooled yourself. NSDPatch makes it look ok, but it isn't. The original scsi.device can only access the first 8GB of the drive. NSDPatch does not change this. PFS3 stores all its directory information in the beginning of the partition, it does not check if the partition is entirely accessible. Your DH3 partition will fail as soon as you fill it with more than ~2GB of data.

are you sure that the big partition will fail if I fill it with more of 2gb of data?
seems to works fine and I read pfs docs and says that the direct scsi version supports 128gb with A1200/A4000 internal ide controllers..but..I will confirm that later

anyways if fails I will insert again the line c:idefix which I removed because of stability issues
also I tested the scsi.device v43.23 and 24 and I realize that 43.23 it's better and stable than .24...also much more stable than idefix
it seems that scsi v43.23 it is the best option

[thomas]

Originally Posted by Fabie

are you sure that the big partition will fail if I fill it with more of 2gb of data?

Yes I am. If you say that you didn't do any change to the internal scsi.device, then it is not possible to access past 8 GB (16 heads * 63 sectors * 16383 cylinders * 512 bytes = 8,455,200,768 bytes). If you try to access the 8,455,200,769th byte, you will get a read error.