Cannot write on sectors using Ipf disk

[fstarred]

Well this is not strictly related to asm but..
I noticed that I cannot write on sectors of Ipf disk using asmone, despite I can do it for the first two sectors.
Despite I receive no errors after the operation, when I try to read sectors I have just wrote I realize no changes are made.
What's the matter? And Why the first sectors are writeable instead?
Maybe I can change only the part of the disk that are not empty?

[Galahad/FLT]

Originally Posted by fstarred

Well this is not strictly related to asm but..
I noticed that I cannot write on sectors of Ipf disk using asmone, despite I can do it for the first two sectors.
Despite I receive no errors after the operation, when I try to read sectors I have just wrote I realize no changes are made.
What's the matter? And Why the first sectors are writeable instead?
Maybe I can change only the part of the disk that are not empty?

IPF is a read only format to protect the integrity of the image, otherwise we would have damaged IPF files out in circulation.

[fstarred]

Hello Galahad, Winuae actually use saved image to store differences, so IPF is not touched at all.
As I wrote before I'm able to write on boot block, however I cannot do the same in other sectors. I'm not sure I'm able to read correctly on these sectors at this point, maybe it's a copy protection matter?

[Galahad/FLT]

Originally Posted by fstarred

Well this is not strictly related to asm but..
I noticed that I cannot write on sectors of Ipf disk using asmone, despite I can do it for the first two sectors.
Despite I receive no errors after the operation, when I try to read sectors I have just wrote I realize no changes are made.
What's the matter? And Why the first sectors are writeable instead?
Maybe I can change only the part of the disk that are not empty?

Originally Posted by fstarred

Hello Galahad, Winuae actually use saved image to store differences, so IPF is not touched at all.
As I wrote before I'm able to write on boot block, however I cannot do the same in other sectors. I'm not sure I'm able to read correctly on these sectors at this point, maybe it's a copy protection matter?

What IPF are you trying to read? And yes it could be that you can't read it because it's not an AmigaDOS format disk

[fstarred]

Speedball, it's not in DOS format indeed. This mean that some tracks can be read while others don't?
There's no way I can write on it?

[Galahad/FLT]

Originally Posted by fstarred

Speedball, it's not in DOS format indeed. This mean that some tracks can be read while others don't?
There's no way I can write on it?

You cannot write on IPF no.

From my memory, Speedball is 99% Amigados with a protection track.

[fstarred]

The Ipf version I have it's a ndos (well, actually the Amiga say so ) thus files are not readable. It's ok for me, the problem is that I can't even write my code to tracks using asm one (ws command)

[Galahad/FLT]

Originally Posted by fstarred

The Ipf version I have it's a ndos (well, actually the Amiga say so ) thus files are not readable. It's ok for me, the problem is that I can't even write my code to tracks using asm one (ws command)

There is no native AmigaDOS file system but the composition of the track format is still likely to be AmigaDOS.