SCSI HDD not seen unless IDE HDD connected

[Thomas]

You can enter anything you like into HDToolbox, as long as the total size fits into the real size of the HDD.

You can also use other programs like HDInstTool or HDToolbox from BB2 so that the geometry is read correctly.

Bye,
Thomas

[Thomas]

The only value you need is the "total number of sectors". All other values are calculated anyway.

total = heads * sectors * cylinders

sectors per cylinder = heads * sectors

sectors = sectors per track

heads = tracks per cylinder

block = sector (these are used as synonyms, although they should mean different things. Terms liks "sectors per block" do not make sense if you use the words as synonyms. But even AmigaDOS itself sometimes says "block" where it should actually say "sector")

capacity of the disk = total number of sectors * sector size

sector size = 512 bytes

Bye,
Thomas

[Thomas]

Can you actually use that calculation to determine the number of sectors?

I would prefer to do it the other way (get the number of blocks from the data sheet and use the capacity to check if my calculations are right), but yes, it should work this way, too.

=> #sectors=18,300x10^6/512 which is not a whole number.

Yes, but it is almost a whole number. The result is 35,742,187.5. I guess the disk has 35,742,188 blocks, then the capacity is 18,300,000,256 Bytes, which is little more than 18,300 million or 18.3 billion.

Bye,
Thomas

[Thomas]

If I cold boot the system, it boots and setpatch reboots the machine, but then I just get a black screen with no HDD activity or floppy clicks.

This happens on my A4000 after a fresh OS3.9 installation, too. It boots fine when I press Ctrl-Amiga-Amiga on the black screen, though. This is fixed by installing Boinbag 1 (for me at least).

SFS on the boot partition is fine. FFS should make no difference. If SFS causes trouble on the boot partition, it causes trouble everywhere else, too. There is no difference if SFS is used on the boot partition or on any other partition.

Bye,
Thomas

[Thomas]

amije wrote:
@Thomas: what is your opinion on sfs v2x? have you try it?

I never trusted SFS and I never will, no matter which version number it has. I'd never entrust my data to a file system which is under such heavy development as SFS. I use PFS3 for years and I am very satisfied. The only advantage of SFS which PFS cannot beat is that it's free.

But I think this is not what you wanted to hear :-D

Bye,
Thomas

[Thomas]

So I copied the ROM Update and NSDPatch.cfg from the floppy to the DEVS: drawer on my hard drive

Did you actually compare the files before you copied them ? Replacing the files by the same versions cannot have any effect.

Additionally, after replacing the ROM Update file you have to switch off the computer to remove the existing copy from RAM. Copying the file without activating it has no effect either.

Did you try to Ctrl-Amiga-Amiga when it hangs as I suggested above ?

Did you install Boingbag 1 or even BB 2 as I suggested above ?

I'm going to try reinitialising the disk

Aren't you getting sick of this, doing one step forth and two steps back ? Don't you think it is time to investigate systematically what is going wrong rather than this trial-and-error method ?

Bye,
Thomas