XDK and Xbox Specific Software Limitations
This is a list of XDK, Xbox hardware, and Xbox operating system specific limitations.
- UDF (Universal Disk Format) file system limitation: The Xbox only supports UDF version 1.02 (designed for DVD-Video), which has a maximum file size of 1 GB (a DVD in a newer UDF version with a video that is larger than 1GB will not play), with the same applying to UDF/ISO hybrid formats (a.k.a. UDF Bridge format). A workaround is to burn discs in the ISO 9660 format. The ISO 9660 format has a 2GB (Gigabyte) maximum file size, which cannot be bypassed.
- The Xbox hard disk is formatted in FATX (File Allocation Table for Xbox) which has a 4GB (4096 Megabyte) maximum file size, and only supports file/folder names up to 42 characters, a maximum of 255 character full path, and a maximum number of 4096 files/folders in a single folder, plus in the root of each partition, the maximum number of files/folders is 256. FATX also does not support all standard ASCII characters in file/folder names (for example < > = ? : ; " * +, / \|ยค &).
- The USB flash drive reader/writer class used by the Xbox operating system has a few limitations as well. It is limited to USB flash drives and hard disks compatible with USB Mass Storage Device Class following the USB 1.1 standard, with a maximum size of 4 GB. It can read and write to FATX formatted flash drives, but can only read FAT12, FAT16 (including VFAT), and FAT32. NTFS formatted drives are not supported yet.
- With its 733 MHz Intel Pentium III-like CPU and 64MB shared memory, the Xbox has neither a fast enough CPU nor sufficient RAM to play HDTV videos encoded in native 720p/1080i resolution. However, the Xbox can upscale all standard definition movies and output them at 720p or 1080i.
Read more about this topic: Xbox Development Kit
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