On 11/19/2015 12:54 AM, Birta Levente wrote: > I tried today morning on RHEL too ... > The ISDCT tool does not work on supported OS neither I think everyone focused on your problem with the vendor, who didn't support your OS, and ignored the fact that the tool worked when the drives were connected to a secondary controller. The OS never caused a problem for the tool, only for the vendor's support staff. So, again, check your BIOS settings and make sure the SATA ports are in the standard AHCI mode.