General Triumph can't detect memory card

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http://androidforums.com – This afternoon.. a triangle icon show up next to the signal or 3g bar area..I don't know what's icon mean for . Late, i figure some of my app can't start up, because most of apps installed in memory card. So, reboot the phone and a message up after reboot, it needs to format my memory card. I ignored it, and now.. it can't detect any of my memory card. My laptop read all my memory but this triumph can't. It can't read memory in recovery mode even. Is anyone have this problem? (General)