Editing USB flash drive (section)

==Counterfeit products==
Counterfeit USB flash drives are sometimes sold with claims of having higher capacities than they actually possess. These are typically low-capacity USB drives with modified flash memory controller [[firmware]] that emulates larger capacity drives (for example, a 2&nbsp;GB drive being marketed as a 64&nbsp;GB drive). When plugged into a computer, they report being the larger capacity they were sold as, but when data is written to them, either the write fails, the drive freezes up, or it overwrites existing data. Software tools exist to check and detect fake USB drives,<ref>[https://www.heise.de/download/product/h2testw-50539 "H2testw USB flash drive test tool"] {{Webarchive|url=https://web.archive.org/web/20240531050359/https://www.heise.de/download/product/h2testw-50539 |date=2024-05-31 }}, www.heise.de, retrieved November 16, 2010</ref>
<ref name="f3">{{cite web |title=F3 by Digirati |url=http://oss.digirati.com.br/f3/|access-date=2016-11-26}}</ref><ref>{{cite web |url=http://www.usbdev.ru/articles/detect_controller/ |language=ru |title=Определение модели контроллера и памяти флешки |date=20 February 2013 |trans-title=Detecting controller model and memory type of flash drive |publisher=usbdev.ru |access-date=2018-01-06 |archive-date=2017-06-06 |archive-url=https://web.archive.org/web/20170606054846/http://www.usbdev.ru/articles/detect_controller/ |url-status=live }}</ref> and in some cases it is possible to repair these devices to remove the false capacity information and use its real storage limit.<ref>[http://fixfakeflash.wordpress.com/2008/12/11/about-vid-pid-repairing-counterfeit-flash-drives-steps-to-succeed/ "About VID PID Repairing Counterfeit Flash Drives – Steps To Succeed"] {{Webarchive|url=https://web.archive.org/web/20110109230403/http://fixfakeflash.wordpress.com/2008/12/11/about-vid-pid-repairing-counterfeit-flash-drives-steps-to-succeed/ |date=2011-01-09 }}, fixfakeflash.wordpress.com, retrieved November 16, 2010</ref>