The other day, I was trying to connect my mobile harddisk to my notebook as usual. Suddenly, an error message pop up asking me to install a driver called "Cypress AT2LP RC58" otherwise my harddisk is not recognisable.
This really scare the hell out of me, all my data will be gone if I cannot read my harddisk. After some checking and troubleshooting, I found the main reason for the problem.
For some reason, the contents of the EEPROM attached to your harddisk had been changed or disappeared. The hard drive works along with a configuration file stored in the EEPROM which contains your harddrive manufacturer's Vendor ID (VID), Product ID (PID) along with other information regarding the hard disk capacity etc. This EEPROM might lost its content due to a results of power surge, loss of power or turn-off of the computer at the wrong moment.
If this is the case, if you can obtain the VID, PID from the manufacturer then restore the configuration file should solve the problem.
However, if the problem is intermittent - i.e. at times the hard disk can be detected yet it disappear after a short while then there may be another explanation. The casing of the hard disk may be the cause itself due to wear and tear. Or there may be another reason, the USB cable itself. Change the cable and you may just find the problem go away.
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