I have tried with the mod derived from the cq10-102ca and the UUID, S/N, PCID were mantained. After I tried also to flash completely the BIOS (via AFUWIN) and using the mod you prepared for me (which is identical to the one I had derived with the AMI tool) . The result was a missing serial number... I was already preocuped... I did again a total flash via AFUWIN using the original saved image, and everything was back working as expected. But there are no traces of the SLIC table when I check for it with utilities. The only way to see the SLIC... is through emulation (DAZ loader). I don't think that the UUID, S/N or PCID are stored on the HDD. They are simply stored in some area of the EEPROM. By the way this is the first time that I find difficulties with the BIOS mod approach (except in server HP blade situation, where the adoption of an emulated SLIC is often unavoidable). I'll try to find the differences in the BIOS and to locate the S/N position, together with the other parameters. Thank you for the suggestion. Mirko.