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Today I noticed that a "BD-ROM Drive" appears in My Computer.

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I do not remember installing anything that would've done that.

What could've caused this?

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Do you have some drive emulator software such as alchool or daemon tools installed on your system? –  Diogo Jul 13 '12 at 16:59
Most likely a virtual drive with Daemon Tools or something..! –  ahmed Jul 13 '12 at 17:03

2 Answers 2

up vote 3 down vote accepted

The likely explanation would be that you installed virtual drive emulation software such as Daemon Tools, Alcohol 52%/120%, or PowerISO (or another disc-burning software that has drive-emulation capability).

In most cases depending on the version and program used, a virtual drive is added automatically after install.

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BD-ROM DRIVE means Blu-Ray Disk Read Only Memory Drive.

It usually appears when you install a Virtual Drive using softwares like Daemon Tools, PowerISO, etc, and it is used to mount .ISO files and many other data formats.

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