When I  have burnt DVD optical disks using Nero Software which is a famous optical disk-burning software, unfortunately I came across a big single xxx.avi Media file[>2GB] which can't be burnt by ISO format. So as to I  tried another file format system called UDF.

       What's the UDF, introduction as follows: 

Universal Disk Format (UDF) is an implementation of the specification known as ISO/IEC 13346 and ECMA-167 and is an open vendor-neutral file system for computer data storage for a broad range of media. In practice, it has been most widely used for DVDs and newer optical disc formats, supplanting[取代] ISO 9660. Due to its design, it is very well suited for incremental updates on both recordable or (re)writable optical media[适合可读写的光盘]. UDF is developed and maintained by the Optical Storage Technology Association (OSTA组织).

Normally, authoring software will master a UDF file system in a batch process and write it to optical media in a single pass. But when packet writing to rewriteable media, such as CD-RW, UDF allows files to be created, deleted and changed on-disc just as a general-purpose file system would on removable media like floppy disks and flash drives[像磁盘，U盘一样能读、写、删除、修改]. This is also possible on write-once media, such as CD-R, but in that case the space occupied by the deleted files cannot be reclaimed (and instead becomes inaccessible).[但在此文件系统中，被删除文件的空间不能再被回收利用，而是成为不可访问的区域]

Multi-session mastering is also possible in UDF, though some implementations may be unable to read disks with multiple sessions. [UDF采用多区段multi-session控制]

Universal Disk Format builds are as follows:

1)Plain (Random Read/Write Access). This is the original format supported in all UDF revisions

2)Virtual Allocation Table a.k.a. VAT (Incremental Writing). Used specifically for writing to CD-R and (write-once) media

3)Spared (Limited Random Write Access). Used specifically for writing to CD-RW and DVD-RW (rewritable) media

 

UDF version                        1.02  1.50  2.0x   2.50    2.60

Windows XP/Server 2003  yes    yes    yes       no      no     [Operating system]

转载本文请联系原作者获取授权，同时请注明本文来自方晓汾科学网博客。
链接地址：https://wap.sciencenet.cn/blog-87352-380441.html

上一篇：约束理论(TOC)
下一篇：IE工程师/助理工程师考核试题