Synchronising cache?

[zyzzle77]

Could someone please explain what exactly is being done when DVD Decrypter displays this message at the end of a burn?

It seems to be doing nothing at all. The physical sectors have already been burnt to the DVD. It just sits there for at least a minute displaying this message about the synchronising the cache?

Is it writing some sort lead-out?

[LIGHTNING UK!]

Is it writing some sort lead-out?

The program, No.

The drive, maybe.

It's just a command you have to submit to the drive at the end of a series of 'write' operations. It just ensures everything you've sent to the drive has actually been written to the disc and isnt in cache or anything. The program polls the drive every second or so to see if it has finished. When it has, it moves onto the next stage.

You may find that if you dont burn much to a disc, the sync cache command will actually cause the drive to burn upto a certain amount - to keep the disc as compatible as possible.

[zyzzle77]

Thanks much. Your response completely clarified the issue (such service from the author, no less!).

Yes, I have found that if a small DVD is burned, the sync cache takes quite a long time (4-5 min), but I usually burn at only 1 or 2X. I'm on a A05 burner, BTW. However, it ALWAYS takes at least a minute, even on a maxed-out 4.38 GB (ie, 4,707,319,808 byte) ISO.

Even though it is impossibe to overburn a DVD, it seems SOMETHING is being written beyond the 4.38 GB of data. It's probably just 0x00 nulls by the 'synchronising cache' operation. In fact, it may be different on various drives.

-z