Virtual CD-ROM switching utility: Difference between revisions

Revision as of 11:28, 28 August 2025

Latest revision as of 11:31, 28 August 2025

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Available software utilities include the following:

* ZeroCD: When a device uses the ZeroCD method means that it behaves as a USB CD-ROM when first connected, with a virtual CD-ROM inserted with the Windows device drivers and related Cosmote control program. Once the Windows device drivers are installed, a special USB command is sent to the device to “switch” it to modem mode. ZeroCD method was invented by Frédéric Nys at Option NV and trademarked by Option NV. <ref>{{cite web|title=ZTE MF636 (Cosmote 3G USB Modem in Greece) & Linux|date=5 November 2009|access-date=2019-02-10|url=http://stoilis.wordpress.com/2009/05/11/zte-mf636-cosmote-3g-usb-modem-in-greece-linux/|archive-url=https://web.archive.org/web/20100109115532/http://stoilis.wordpress.com/2009/05/11/zte-mf636-cosmote-3g-usb-modem-in-greece-linux/|archive-date=2010-01-09}}</ref>{{Unreliable source|1=|certain=y|date=August 2024}}

* Ozerocdoff: It temporarily disables ZeroCD for USB Option WWAN modem. The new USB Option WWAN modem devices support a CD-ROM device, which holds the needed Windows device driver to use the WWAN modem. Therefore, the firmware of the WWAN modem announces during the USB enumeration process to work as a virtual CD-ROM device with its vendor name "ZOPTION". This device is now called ZERO-CD. Ozerocdoff is a solution to switch off the ZERO-CD and allow the modem to be a used as a modem.<ref>[http://packages.debian.org/sid/ozerocdoff Debian package ozerocdoff in sid]</ref> {{Citation needed|date=August 2024}}

* USB_ModeSwitch: It is a virtual CD-ROM switching utility. From version 1.0.3 upwards there is a simple framework for integrating the switching with [[udev]] (the device manager) to make it fully automatic.<ref name="usb_modeswitch"/>