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pcjco

File and Folder overhead on UDF filesystem

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Hi,

I noticed that if I put a given group of folders and files on a DVD , CDBurnerXP doesn't show the same amount of space whether I choose an ISO or UDF filesystem.

For ISO, it seems that only a block size of 2048 bytes is used in order to compute the total estimated size but not for UDF.

Where can I find information on how is computed the estimated size for a set of folders/files on an UDF filesystem ?

Thanks.

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This document has too many informations. :shock:

I read at several places that ECC Block Size is 16KB but using this value I still doesn't have the same exact count between my computed size and the size shown in CDBXP.

I tried on Nero Burning Rom.

Nero seems to use a common way to estimate the size on ISO and UDF :

each file uses a block size of 2048 bytes.

and Nero seems to add additional 48 bytes per file at the directory information level.

But Nero reserved a minimum of 338 KB for the directory information whereas it is 1.44MB for CDBurnerXP.

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We do in fact have various file systems in combination with UDF. I currently have no simple overview how much each one uses, so you'll have no choice but to try and see ;)

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