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// 0: Unknown // file_device_cd_rom: CD-ROM // file_device_dvd: DVD-ROM function getcdtype (drive: Char): device_type; const size = 2048; var hdrive: thandle; dwbytesreturned: DWORD; bmediatypes: array [0 .. size-1] of byte; rmediatypes: tgetmediatypes absolute bmediatypes; begin result: = 0; hdrive: = createfile (pchar ('\\. \ '+ drive +': '), generi
The computer was originally XP system later replaced by the Win7 system, found that DVD optical drive can not be used, the system has not moved anything, the other computer has changed this system, but DVD optical drive can be use
be scrapped, and the CD should be smaller than MB. How to burn ISO files and use a virtual Optical Drive 1. Locate the ISO file you want to burn (double-click it ): 2. Double-click the ISO file in the list below, and then Hu automatically displays the files and directories under the ISO file in the list above. Click "Tools"-"burn a CD image" or press "F7 ". If you only want to browse the specific file
Windows7 does not recognize some DVD optical drives, this is not a DVD issue, but a Windows7 problem. Microsoft officials have explained that the problem is due to the new power management capabilities of the SATA driver (msahci.sys) Adaptive Link Power Management (ALPM), which causes some optical
Our people now basically use computers, everyone will be in the Win7 flagship computer watching the Web page watching TV, there are many uses, although the computer has a DVD function, but the basic users will rarely use these features, we will feel that this function is useless, watching video can also be viewed directly on the Web page, But we still need to see some tutorials users need to use this feature, we insert the disc will find that the
Recently, a friend asked in the forum, why in the driver after putting the DVD will not recognize it? win7 system prompts Windows cannot verify the data signature of this device ... (Code52) "What's going on?" The following small series will Win7 cannot verify the solution of DVD optical drive device and share with you
re-enable the optical drive.Therefore, the above methods to prohibit the use of optical drives through the BIOS are rough, but also face a large vulnerability, cannot achieve precise and effective control of the optical drive. Therefore, you can disable or release the optical
You should be familiar with the computer optical drive. The optical drive is a computer hardware device. You can see its usage in the "device manager. Recently, user feedback from WinXP system showed that the optical drive ic
Small Common sense: Virtual Optical drive: is a simulation (cd/dvd-rom) Work of the tool software, you can build and your computer installed on the CD-ROM optical disk image, the normal optical drive can do the same thing as a vi
find discs. If the above action occurs, the laser tube is extinguished, the spindle motor is stopped, then the optical drive control circuit and the servo circuit is normal, it is possible that the laser head components are faulty. Otherwise, check that the optical drive control circuit and the servo circuit are norm
laser tube is extinguished, the spindle motor is stopped, then the optical drive control circuit and the servo circuit is normal, it is possible that the laser head components are faulty. Otherwise, check that the optical drive control circuit and the servo circuit are normal. For the DVD's laser head, there are gene
. CD-R :( compact-disc-recordable) 1990, Philips published a multi-segment one-time writing disc data format. It is an Orange Book Standard. Add a one-time record dyeing layer to the disc to enable burning. CD-RW: Add a Rewritable dyeing layer on the disc, through the laser can repeatedly write data on the disc. Sdcd :( super-density-CD) is Toshiba, Hitachi, Pioneer, Panasonic, JVC, Thomson), Mitsubishi, timewamer and so on to develop a ki
Is that the DVD drive is not recognized by the system, in Device Manager is just a ... The exclamation point indicates a problem with the data signature: I don't know if you've had a very strange problem after you upgraded to Windows 7. "Windows cannot verify the data signature for this device ... Middle slightly (Code52) " One way to do this is to turn off digital signatures. This will
loaded into the virtual optical drive to run, fast and convenient. Disc 3 Virtual optical drive V3.31"Disc 3" is a fully real virtual Optical Drive. Supports StarForce1/2/3 (IDE light drive
"alt=" Ff8d5c3d36c6719b3c6d975a.jpg "/>Finally, take a photo:Before reseating the USB flash drive:650) this.width=650; "Width=" 758 "height=" "style=" width:875px;height:790px; "src=" http://hiphotos.baidu.com/ Lxjinfo/pic/item/12aaea11f8975eb3a6ef3f01.jpg "alt=" 12aaea11f8975eb3a6ef3f01.jpg "/>After reseating the USB stick, we can see the drive650) this.width=650; "Width=" 758 "height=" 568 "src=" http://hiphotos.baidu.com/lxjinfo/pic/item/ 27d501f4
In Windows Explorer, you can right-click on the DVD/CD Optical drive icon, select Eject to open the drive compartment door, and you may also find that there is no "close" command on the menu to turn off the optical drive. Next, le
not automatically mounted by default. If the system administrator needs to use the optical drive, he needs to first put the CD or DVD disk into the optical drive, and then use the command mount to attach it to the optical
Q: My DVD drive does not read the disc at intervals, and sometimes a good disk is not readable. Recently, simply do not recognize the plate, lights flash a few off, DOS also can not start. What am I supposed to do?A: The ability to read the disk is poor or unable to read the disk, optical drive is the most common fault
Do you have a lot of friends who are still using DVD optical drive? The previous XP system made the DVD fluent and not a big problem to use, but after upgrading to ghost Win7, Many friends have found the following strange problem: Windows cannot verify the data signature of this device ... Middle slightly (Code52). Win
The newly-bought notebook is usually shipped with a DOS or Linux system, due to the manufacturer's cost savings, or when we buy it for less money. (This is because if the pre-installed Windows 8.1 will cost you hundreds of dollars), this time we use a USB external optical drive or USB drive to boot the installation system Windows 7/XP prompt error: The required
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