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[ubuntu] usb not working on ubuntu

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linux-howto

http://ubuntuforums.org – Hi friends I pluged my mobile phone in my laptop for charging .on that time my external hard disk also plugged in that time suddenly harddisk is down and no other usb is not dictated in sub ports ............ This is the message I got ,hard is plugged but light is not on hard disk sudo fdisk -l Quote: rivaus@rivaus:~$ sudo fdisk -l Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal (Hardware)