Hacking Error -31 on sparse ntfs iso files

[myron0815]

Hi,

currently testing the step from wbfs->ntfs.
Whilst this works like a charm, the compressed ntfs folders give me some headaches :/

I mostly get an error -31

if ((na->data_flags & ATTR_COMPRESSION_MASK) && NAttrNonResident(na))
{
return -31;

i tried to defrag my hdd, then it got better (but not 100%)

One game had a special behaviour:
After the click on the game, it took 15 seconds (!) to load the banner sound and another 15 seconds (!) to display the spinning cd dialog (saw some console flickering in the background dunno whats going on here)
Looking into the fragments showed no real fragmentation: data had no fragmentation, but in the first block of the hdd, i saw some matadata info i cant remember (something to tell if sparse or not; maybe xxx.iso::$ATTR_COMPRESSION_MASK... dunno) Didnt got this defragmented (if we call this a fragment).

Any ideas, what causes this error -31, or, better, how to suppress it?
what needs to be done?!
Better defragmentation... or better libntfs support?!
Or where is the/my problem?!

 

[XFlak]

just use fat32 for now... wait until oggzee perfects ntfs support

i know its not a real solution, but its what i would do

 

[fig2k4]

As far as I know, NTFS compression isn't supported yet. That's why everyone's using sparse ISOs to save space instead of compression.

 

[myron0815]

ok, this might be my problem ^^
thought that ntfs compressed == sparse file.... but it seems that is not the case.

so how to create/set a file as sparse file?!

 

[oggzee]

NTFS compresson will never be supported for loading games.
Disable that on the file or on the whole drive.
To create sparse files use one of these tools:
- wii backup manager
- wii game manager
- wbfs_file.exe
but the easiest way is to just use .wbfs files instead of .iso

 

[myron0815]

thanks - got it working.

you live and learn ^^