I very recently attempted to prepare a disc layout for a BD-RE-TL 100GB disc and was attempting to squeeze as many files as possible into the available formatted free space of approximately 94 GB (which may vary up or down slightly depending on whether spare sector areas are enabled and what size spare sectors were specified during disc formatting). It was noticed that there are discrepancies reported in different areas of Imgburn under varying conditions, as follows:
1. When there was NO formatted BD-RE media inserted, and the disc layout editor was used to produce a draft disc layout and the disc space consumption bar was monitored (disc type next to disc space consumption bar was manually set to BD-RE-TL in this case in the disc layout editor) when files were dropped into the layout, I added files so that it was within 1% to 2% of maximum disc space, i.e. disc consumption was 98% to 99%. After closing disc layout editor, and returning to the INFORMATION tab of Imgburn, clicking the CALCULATOR button resulted in a disc consumption result of 99% (which was correctly rounded up from 98%+ shown in the disc layout editor).
2. However, when the BD-RE-TL media was inserted into the BD writer and the relevant BD writer drive was selected in Imgburn, and the INFORMATION tab CALCULATOR button was clicked again, the INFORMATION tab now showed that the disc space consumption was BEYOND actual available free disc space on the blank but formatted media (with spare sectors enabled in preferred mode) and the information tab showed the consumption at 102% and free disc space was NEGATIVE 2 GB, both figures highlighted in red.
At first I thought these discrepancies might be a bug, but then realized that the probable reason this occured is that after formatted blank media with enabled spare sectors was inserted, the effective free disc space was reduced from the initial calculation due to disc space reservation / consumption by spare sectors areas.
Is this what is happening?
This is the only immediately obvious logical explanation I could surmise. If this is correct, then I would need to remove some files from the disc layout to meet the reduced free space available on disc. If this is not the reason for the reduction in available free disc space calculation, then this may be a bug or due to other factors.
If the reason for the available disc space discrepancy is as surmised, then I would suggest that the disc layout editor's DISC SPACE CONSUMPTION BAR PERCENTAGE also take into account the same factors that affect available free disc space. Because currently, I have observed that while the INFORMATION tab calculation takes into account actual available disc space after formatted media is inserted, the disc layout editor available free space percentage does not re-adjust to reflect this and thus there's a major discrepancy between the free space percentage reported in the disc space editor and the information tab calculation, by as much as 4%. In the above example, the disc layout editor's disc space consumption bar is a little over 98% but the information tab reports it as 102%. Thus a free disc space discrepancy of nearly 4% in this particular example.
I also noticed that when the AUTO box is ticked in the INFORMATION tab, and another ODD is selected which may not have any media inserted, the disc space consumption is not updated to reflect this, even though I do understand that the AUTO box is for auto updates of disc space consumption after disc layout editor is closed rather than when the selected ODD drive is changed, but this may be a point of enhancement worth considering for a future release to maintain constantly correct calculation relative to the currently selected drive and whether it has writable media inserted where the effective available free disc space could be determined by Imgburn that could be used to update disc space consumption / free space available values.
Edited by discuser, 27 May 2018 - 08:22 PM.