I have delete the SSD and HD of S7 to install a clean Win7. Unfortunatelly, the SSD cannot work anymore. I have tried many methods to fix this problem. The following maybe the most possible way! 1. goto the expresscache setup folder -- C:\Program Files\Diskeeper Corporation\ExpressCache. 2. use the dos CMD to run the ECCmd. 3. we can see that the ECCMD has many orders, including PARTITON, FORMAT. 4. when I try to run any orders of ECCmd, it reports the following error: HFS Volume is not mounted. 5. So I format the SSD disk to HFS+ format, because the HFS format cannot support a disk bigger than 2G. but after this, the ECCmd still reports the same error. I believe that the ECCmd can fix this issue, only if we can find a proper format for SSD disk.