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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
up vote 4 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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I used DAEMON Tools, as mentioned in other posts, and a lot of BD-ROM drives appeared on my computer; actually, they took over all the drive letters, from E: to Z:. On my laptop, I couldn't use any USB drives. With no drive letters remaining, when I insert a flash USB, it can't mount on Win8.

I went to disk manager under device manager and disabled several of them. After that, USB was able to mount.

The OP has only one BD-ROM, so that was not the problem in this case. But this may be helpful to someone else.

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I also used DAEMON Tools and a lot of BD-ROM drives appeared on my computer, actually they took over all the drive letters, from E: to Z:, the topic starter has only one, so that was not a problem, but on my laptop I couldn't use any USB drives. Hope this will be helpful to someone as well. – B.I. Jan 22 at 9:25

In Daemon Tools you can also click on "Remove all drives" and this will get rid of all the unwanted BD-ROM drives

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