This article needs additional citations for verification .(May 2011) |
Stable release | 1.90 / January 19, 2018 |
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Operating system | Windows 2000; Windows XP; Windows Vista; Windows 7; Windows 8; Windows 10 |
Platform | IA-32 and x64 |
Size | 1 MB |
Type | Device driver; Application programming interface |
License | Proprietary Device driver: Freeware API: Commercial software |
Website | www![]() |
SCSI Pass Through Direct (SPTD) is a proprietary device driver and application programming interface (API) that provides a method of access to SCSI storage devices. Originally developed in 2004 by Duplex Secure Ltd., it is now owned and maintained by Disc Soft Ltd., [1] the developer of Daemon Tools.
SPTD is used by Daemon Tools and Alcohol 120%. It is also utilized in PowerArchiver Pro 2010 (v11.60+); however, a configurable option is available to disable it. [2] It is known to be incompatible with kernel-mode debugging including WinDbg and Microsoft's other command line debuggers as well as SoftICE. Further, certain versions of the freeware optical media burning software ImgBurn will issue a warning, "SPTD can have a detrimental effect on drive performance", if the application detects that SPTD is active or installed.
ConeXware, Inc. (the maker of PowerArchiver) claims that in their internal testing, SPTD improved optical drive performance by up to 20 percent in comparison to the "old school" SCSI Pass Through Interface. [2]
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