InCD - Best UDF format version?




I was wondering, what is the best UDF format version to use for DVD+RW and CDRW, in the format tool it recommends 1.50. I was wondering if you guys have any comments ?



same question…i am quite sonfused as ahead says no word on this in their helpfile…i tried to search the web and i found some site with the original udf specs but it’s written in quite a difficult way for me to understand,no simple explanation at all.i wonder if anyone knows and is able to tell the differences between all the udf versions without giving me 40 lists of paper…i would really appreciate that.


UDF 1.50 adds Virtual Partitions support and proper defect management via Virtual Allocations and Non-Allocatable Space.
UDF 2.0 adds Unicode, Named Streams, Apple Mac, OS/2, Access Control Lists and extended attributes support.
UDF 2.01 just fixes some bugs and adds several clarifications.
UDF 2.50 adds detailed specifications and new recommendations for DVD-R/RW, DVD+R/RW, DVD-RAM media and some new metadata.
UDF 2.60 adds Pseudo OverWrite Method and support for BlueRay Disks.

So, I would recommend to use UDF version 2.50 for DVDs and version 2.01 for CDs.
Use older versions only if you need a better compatibility with old operating systems or software.


Personally don’t like packet writing software. Known more than one person who put in a formmated disc with data on it only to find it blank.


wow thanks

what is that pseudo overwrite method you were talking about?


(O/T) I would go further and question the use of RW at all today. When I first started burning, Disks of any kind were much more expensive. Today I no longer use RW but if I did I would not go back to packet writing



Thanks a lot mate VERY much appreciated !! Nice one.


It’s a new method of packet writing to write-once ® media.
It’s not currently used for DVDs or CDs.
And it’s not relevant for InCD at all, becase InCD can only use RW media.
But, if you still want to know about pseudo overwrite, please read the info below.

In previous UDF revisions (as described in UDF 1.50 through 2.50), multiple sessions, or the VAT is used to achieve sequential recording functionality on CD-R, DVD-R, and DVD+R media.
Next generation drives supporting pseudo overwrite capability on sequentially recordable media will contribute to a decrease in file system complexity.
The UDF Pseudo OverWrite method described in this appendix can be applied to such pseudo-overwritable sequentially recordable media.
Benefits of the UDF Pseudo OverWrite method include:
• Increased compatibility as ensured by the drive supporting pseudo overwrite
functionality and defect management
• Reduced complexity in file system implementations since the entire volume space is Overwritable (at logical sector granularity) while defect management is implemented in the drive
• UDF implementations can use the Metadata File to locate metadata in a logically contiguous manner. This metadata can optionally be duplicated in the Metadata Mirror File in order to achieve the desired redundancy


I need to transfer several GBytes of data from my work PC to my home PC once a week.
And I don’t want to use new DVD-R or DVD+R disk for this transfer every time.
So, I just use one DVD+RW disk.
Usually it works fine for 100 erase/write cycles.

I would probably buy a 4 Gb USB flash stick or 2.5’’ USB HDD, because they are faster and more reliable, but I don’t have money right now.


Yes, I agree that packet writing is less reliable comparing to session writing.
But it’s much more convenient and sometimes faster.


DVD-RAM much better.


thanks very much:)


I formatted a CDRW for packet writing with InCD version 4.1 and used it with two Sony CDRW drives for some time with no problem.

When I got a DVD-RW drive (Sony DW-D26A) I had problems with InCD. Often it would report the drive “not ready” and would eject the CDRW. Windows would report that the device failed. I decided to upgrade to the latest InCD version It worked correctly with the DVDRW drive, until I tried to use the CDRW with InCD 4.1. That’s when the trouble really started.

I took the CDRW to work where I still was using InCD 4.1 and a CDRW drive. I wrote to and deleted files from the CDRW using 4.1. When I put the CDRW back in the system with InCD, it reported all of the files added by 4.1 as “read-only”, along with the folders that they were added to. The read-only files and folders cannot be deleted by Attempting to do so hangs Windows Explorer: sometimes immediately, sometimes on a later operation on the CDRW. It cannot be ended. The system must be rebooted, often with a hard reset. On reboot, chkdsk reports file system errors on C:…

CDRWs formatted for packet writing have been touted as a replacement for floppy disks for many years. But all efforts to use them that way have failed because of incompatibilities, not only between packet-writing software packages, but even between different versions of the same software package. What good is rewritable removable media if it cannot be written and read on more than one system?

InCD versions were not compatible with each other several years ago, and the situation has not improved with time. It has never been possible to reliably take a CDRW formatted with InCD to any other system, read files from it, write files to it, and take it back to the original system and have it continue to function correctly. Why is that? Doesn’t anyone understand how to make packet-writing software truly compatible with previous versions? Will there ever be a solution to this problem, or will packet writing always be as frustrating to use as it is today?


DVD-RAM panasonic formatting tool says that for this kind of disc UDF 1.50 is for data and version 2 for DVD Video.
So not as easy as that. You have to look also at the media format you are using…

By the way…how can we chose the UDF version or FAT 32 (in the case of DVD-RAM) if we use InCD? Someone has a practical experience on that please?