UDF - a specialized file system that does not depend on the operating system and is designed to store your files on different media.It should be noted that the UDF is an implementation of ISO / IEC 13346, and it is designed to be a full replacement for ISO 9660.
versatility and the ability to use a variety of operating systems includes the use of the file system, not only when writing ANY KINDor optical discs, but also in the processing of other media, among which is to provide a portable hard drives, as well as various flash drives.
What opportunities has this file system?
UDF file system allows later additional write files on disks of CD-R or CD-RW on the same file, while not causing this loss of space.In addition, this file system takes into account the ability to selectively erase certain files on rewritable media, allowing subsequently free up disk space.
file system metadata, including the root directory can be in any sector of the disk, but directly to the root itself is their only sector 256 or 257.
worth noting that the UDF file system is provided for DVD-media, ascharacterized by the best support for high-volume disks.In other words, unlike similar file system there are no restrictions on the recording or 2 GB to 4 GB.It is envisaged the use of fragmented files.
What are the versions?
After its development UDF file system has become quite common, so that it is constantly improved and updated.Thus, over time there have been several different versions of it:
Initially, this version is designed to provide a more efficient burn DVD media files.This operating system is supported by Windows 98, as well as multiple versions of operating systems from Apple.There is a possibility of using a DVD-RAM, and magneto-optical disks.
UDF file system this version differs from the previous ones in that it has a support for virtual CD rewrite and DVD-R technology by introducing a Virtual Allocation Table.In addition, the system had been introduced special reserve a table file that allows you to determine whether there is any damage to the rewritable optical media.This file system is supported on Windows 2000, Linux 2.4, as well as the increasingly popular Mac OS 9.
slight improvement of the previous version is to support streaming files, and files in real time while recording DVD.In addition, with the introduction of this version of the UDF file system it has become easier to manage catalogs, as well as greatly expanded support for VAT.
After the introduction of version 2.0, has been found a lot of different errors.It is for this reason that after 2 years was released version 2.01, in which the overwhelming majority of errors were fully corrected.Also worth noting is that in this version, it was clarified quite a number of ambiguities in the standard.Version supports Windows XP.
significant upgrade of the file system, which transferred it to a completely new level.Now UDF format has a section of metadata that facilitates the overall grouping metadata.In addition, this file system has become much more secure, because it was considerably simplified the procedure for recovery and optional duplication of the file system data.The system works with Windows Vista and higher.It is worth noting that if you are using Windows XP or an earlier version, in this case, you can not open this file system UDF.What is it?Simple lack of support for the OS.
This version includes technology psevdoperezapisi disk, which has made a consistent record of data.Supported operating systems Windows Vista and above.
It is worth noting that the development provides an even greater expansion of which will support the file system UDF.What will it be?Yet no one can say, but we know that will continue to be possible to use this file system for very voluminous hard drives and a variety of holographic media.
Windows operating systems XP provide the ability to support this file system in versions from 1.02 to 2.01 in reading.Using specialized utilities can work with different discs CD-RW or DVD-RW in the same way as with conventional diskettes large volume.In other words, it is possible to carry out recording, reading, deleting and renaming files, that is directly carried out with them a variety of operations available in the interactive mode, without the need for the introduction of specialized teams.If we consider the operating system Vista and 7, then they are also present regular means to use optical media online.
also actively supported by the file system and on Linux.To create a disc with such a system can be used in almost all modern versions of the programs that are needed to create images.If you use udftools, then in that case it will be possible even formatting the drive in the file system, and then use them similarly large volume floppies.
When to use it?
Although the UDF 2.01 file system and other versions appeared for a long time, until today it is not any actual replacement, so it enjoys a very, very popular.
UDF format is optional for the CD-ROM, but if we are talking about recording a DVD, in this case its use is more than relevant.Of course, DVD is also often written in standard ISO, but in fact, any expert will tell that much better for this purpose is the file system UDF.The open such files, do not know everything, but in fact there is no difficulty to find in the Internet the appropriate utility.
What are its advantages?
For example, you already have some recorded RW-drive.What you can then do with it?If the disc is left free space, in this case, you can fill it with new files, and if the disk is already full, but you want it to record something, you have to completely erase all information from it and re-it again.All of this takes a lot of time and makes you completely delete all the information from the same.
can also give you another example.If your disk is stored in any reports that for recording a new version of the report you will need to re-create the session.At the same time, as we know, after mashing session files of the old will continue to be on the disk and, therefore, occupy space, so that it may be that the disc is placed just any one file whose size is 1 MB, butthis is no longer space, as it took all of the previous session.
For this reason, if you want to work with their drives with standard hard drives, then in that case you should use the file system UDF.How to open these files, it is easy to learn, and the volume of such programs for downloading small.
Thus, using this file system, you can easily delete files, after which they will be physically erased from the disk and will not take up its volume.In other words, to free disk space, you will not need to format it completely - just delete any unwanted data you need.
How to do it?
create a disk that will be used UDF file system or the ISO, is simple enough - it can be used popular these days the program Nero Burning ROM:
- initially opens the section "New Project" and then selects CD-ROM(UDF) or DVD-ROM (UDF).
- now need to specify the file system parameters that are optimal for you.Immediately it is worth noting that if you do not understand this, do not interfere, because the default characteristics are quite acceptable.
- eventually need to create a physical partition, and use the file system version 1.2.
After you record a disc so all limitations of the file system ISO, will be completely removed.However, to remain one small remark which, though confused by the few - the disc can be called only in capital letters and the length should not exceed 32 characters.Also, do not use spaces provided.
record in the mixed format
latest version of this program include the ability to use ISO / UDF-format, that is, it can work when applied not only to the file system UDF.Will read the DVD into a format the computer?Of course yes, if you use a modern operating system.
In order to make such a disc, you need to be in the "New Project" select the DVD-ROM (ISO / UDF) or CD-ROM (ISO / UDF), which are the latest in a list format.This CD combines the directory structure of each of the formats considered.
worth noting that the entry in the mixed format is pretty good and best suited for storing files.Thus the creation of such a carrier is similar to creating a standard data disc.
Since the disk space will be used at the same time two file structure, it will be a little less usable capacity compared to the conventional, as two structures requires more.That is why, if the recorded CD-ROM or DVD, but in full, it is best to use a simple file system UDF.How to burn, we've already figured out, you now need to figure out how to open these files.
How to open?
problems opening the file system are not uncommon among the modern users.You can often encounter such a situation that, for example, the file transfer files with the music, which is indicated by the file system UDF.Will the head unit read the file?How to open it?For those who do not know this file system opens a lot of questions.
To open the file, in modern operating systems often simply do it by double-click, and then the OS will choose what kind of program to use to open it.If you can not open your file, in this case, it may be a situation that your computer is not the desired software application, which allows you to open and edit files with this resolution.
If your computer opens a file, but it is trying to use this for the wrong program, in which case you will need to make changes to the file associations in the registry Windows.The problem here is that Windows finds files with the wrong extension programs.
In that case, if your computer do not have a program which could open this extension, you will need to download it.Among the program with a pleasant and simple interface, you can select FileViewPro.