| All comments about sptd.sys: |
 Rod Dines | Installed with Daemon Tools V4.00 - Scsi Pass Through Direct (sptd.sys) driver See also: Link |
 | SCSI pass-through driver, for me it came with daemon-tools |
| foxtrot | Gehört zu Daemon Tools |
| Toni | Deamon Tools oder Alcohol |
| Shay | Daemon Tools Driver See also: Link |
| T | Daemon tools 4.0 or something |
| | Deamon Tools |
| Richard | Diese Treiber-Datei gehört zu Daemontools, einem Programm zur Erstellung virtueller Laufwerke See also: Link |
| mspeedo | This is a part of Daemon Tools software See also: Link |
 Leon | A driver for DAEMON Tools Virtual Drive Manager. Configured to be the very first driver to load when system starts; may cause instability. |
| | Driver used by the CD Rom emulation program, Daemon Tools Version 4. There have been some reports of problems with this driver. |
| Jeremy | SCSI Pass Through - Comes with Alochol |
| Task514 | Came with Daemon Tools. Not dangerous, but can't boot when SATA and ATA drives are installed. See also: Link |
| Phil | Daemon Tools |
 w. cossey | comes with daemon tools and alcohol. The company is duplex secure (www.duplexsecure.com).. It is supposedly an interface system that prevents rootkits from working etc (however it is a bit strange in itself, as it blocks registry keys, file access and other things), so it is hardly 'harmless' See also: Link |
| Geert Porteman | I make extensive use of Daemon Tools, so I absolutely couldn't miss it. |
| sneako | If you have an UNMOUNTABLE_BOOT_VOLUME error, and try to boot to safe mode, SPTD.sys freezes the system when it tries to load. |
| power | Along with Daemon tools v4 |
| Max | This is something you need if you are running Daemon Tools. If you have problems starting Windows, then you have to upgrade the driver. Get the newest one from the link. See also: Link |
 | it cause BSODs on most pc - reinnstal system and clear the bootsector |
| alextooter | Daemon Tool 4.03's driver See also: Link |
| swiebertje | Daemon Tools |
| Nick Price | SCSI Pass Through Direct used for many virtual drive software tools See also: Link |
| Jon | SCSI Pass Thru Direct driver for Daemon tools or Alcohol 120% |
| Dt | I dont have daemon tools installed, and i got this file. i use alcohol |
| anger2headshot | DAEMON Tools is not dangerous... it does have optional adware though... |
| | SCSI Pass Through Direct layer (http://www.duplexsecure.com/). Comes with Alcohol software or Daemon Tools. |
| MarcinPoland | i have a vista and in bsod i see message sptd.sys i don't have daemon tools i have alcohol 120% hmm maybe is system file ? |
| Phantom | Daemon Tools 4 See also: Link |
| Alex Ershov | file for Alcohol120% |
| scoobie | Loads with Alcohol 120%. More info & Uninstall see link See also: Link |
| Richard | Driver for DAEMON Tools. Hides part of the registry. Hooks registry api. |
| jr | Daemon Tools ist installiert |
| Scree | Also installed by Alcohol 120% |
| Brian | For me, after updating my Win Xp Pro, i was unable to boot past the splash screen...after some trial and error in safe mode..renaming this file..allowed me to login to Windows. |
| aergaroth | As above with Daemon Tools 4.x.x driver |
| Gordon Pettey | SCSI Pass-Through Direct, similar to ASPI or SPTI but more features. Not malware. To uninstall, simply download the setup file from the link, and in the dialog that shows, click "Uninstall". SPTD is required by Daemon Tools and other software making use of virtual optical drives. It is a much safer method of creating virtual drives then just assigning a drive letter to a directory, as the virtual drive software has direct control over the drive. A rootkit or other malicious program could simply change files to compromise a system, with SPTD, malicious software is locked out of the loop. See also: Link |
| Warrior | Let my system freeze during startup. A real pain in the a**. |
| bribot | Installs with a darmon tools when windows boots |
| Circlestrafe | Causes safe mode to freeze...normal mode 2 BSOD. Delete the file. |
| rowdy | would not allow system to boot in safe mode. |
| | Alcohol/DAEMON related. Completly harmless. As with all programs, it may be unstable in certain systems |
| | Could be from Daemon Tools or Alcohol |
| hoang | think it's essential if they don't have to logon safemode, now i'm having a problem with user admin and need to logon in safemode, i tried many think, many way to solve this problem but ......dfs#*@#*99. anyway it's also very good when we want to play game or anything else with and virtual driver (made by daemon tool, alcohol 120 ...) |
 hank | It causes Rootkit Revealer alarm! There are some registry entries hidden. |
| Disel | Alcohol 120% and Daemon Tools virtual drive driver. |
| Angry User | It comes with a number of Drive Emulation and Disc Mastering software, including Daemon Tools and Alcohol (120% and 52%). Duplex Secure claims sptd.sys is a security benefit. But the software itself acts like a rootkit. And, while it has nothing to do with networks, it somehow disrupts network connections. When the original software (Alcohol, for example) is removed this driver stays in place. It is particularly hard to remove (a number of abnormally protected registry keys + the driver file). |
| Pytha | Daemon Tools |
| Steve | Daemon tools. up to ver 1.55 still causes occasional boot problems |
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