#1 Burning Software

I noticed that when I use DiscInfo.TotalSizeInLBs to retrieve the total disc space for DVD+R, it returns 2295104, which multiplies 2048 = 405405696 or 386 MB !!! The DVD capacity should be much more than that - should be 4,483 MB. The same code reports correct size of CD, but not for DVD.

What am I doing wrong here?

You don't handle 64-bit integers properly. Truncation to 32-bits results truncated size. Search forum archives - this topic was already discussed here.

Anton, please correct me if I am wrong, but DiscInfo.TotalSizeInLBs returns a uint, not a ulong. So even if I do:

ulong retValue = DiscInfo.TotalSizeInLBs;

it still returns incorrect value for DVD+R size.

Please help.

I checked in the new Joliet OCX sample, the value of returned Free LBs is integer type (32-bit) and is not the true size of the DVD disc.

It's true size of the disc in the logical blocks (sectors). If you need size in bytes - multiply the value in logical blocks to 2048 (cooked sector size). At this point you you get overflow. So use __int64 instead of ulong in your code.

I got it to work now... Thanks Anton

Good