Blitz: DosElmoreLib incorrectly reporting DiskUsed

[motorollin]

I have already mentioned this in another thread but thought I would start a new one as it's a new problem.

I'm using DosElmoreLib to try and get a list of volumes and their sizes. I'm having problems with the DiskUsed function, in that it returns a value which is far too small. For example:

AnalyzeDisk "HD1:"
Print DiskUsed

returns a negative value!

The partition is 16GB in size and has just over 2GB of data on it. I don't know if that's anything to do with the problem. I ran the same routine on HD0: which is 1GB in size and has 27MB of data on it, and it correctly reported the amount of used space on the drive. However, I also get negative values from RAM: and DF0:.

Is this a bug, or am I doing something wrong? I'm using OS3.9 if that makes any difference.

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moto

[Piru]

It calculates the disk size using signed 32bit math. If the partition size is >2GB it b0rks.

However, I also get negative values from RAM: and DF0:.

Well, if that happens then the routine is broken even more ways than just 32bit signed math.

[motorollin]

I thought as much. Do you now of any other way to find the used space on the volume, other than parsing the output from C:info for the number of used blocks and multiplying by the blocksize of the partition?

--
moto

[Piru]

Call dos.library/Info() yourself and use 64bit math to calculate sizes.

[motorollin]

Ok, thanks for the tip. I'll do some research and find out what I need to do to call the library function, and the syntax of the info() function.

--
moto

[Piru]

Right, I don't have a clue how you can do that in Blitz, anyway. Maybe someone with a blitz clue could help?