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File Version :
Description : CDR4 CD and DVD Place Holder Driver (see PxHelp)
Copyright : Copyright (c) 1994-2005 Sonic Solutions
Product Version :
Product Name : Drag-to-Disc
Company Name : Sonic Solutions
Internal Name : CDR4.SYS Place Holder for 2K and XP (see PxHelp)
File Size: 9336 byte(s) 9.120 KB
MD5 : 837eef65af62d4e8a37c41d3879f7274
SHA1: D2A96110261E4E2503E7C54FE24AB7D92D7D165F

Download CDANT_O.SYS
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How to Install CDANT_O.SYS
Repair Sys ProblemsFixing a corrupted or missing CDANT_O.SYS error is an easy process with a few steps. Open the zip-file you downloaded.Extract the .sys file to a location on your computer. We recommend you to unzip the file to the directory of the program that is requesting the file.
If that doesn't work, you will have to extract the file to your system directory.
By default, this is C:/WINNT/system32/drivers (Windows NT/2000).
or C:/Windows/system32/drivers (Windows XP, Vista, 7).
Make sure overwrite any existing files (but make a backup copy of the original file)
That should be it. Although not necessary you can reboot your computer as well.