Super slow Windows install on Asrock 870 Extreme 3 with RealSSD C300

Hi,

I am trying to install Windows 7 Ultimate x64 with SP 1 original unmodified MS Technet ISO to a blank Crucial RealSSD C300 SSD drive and it is taking hours to do that. The last time I did the install it took almost 4 hours to copy the files, I tried it from a DVD drive and from an external USB-HDD and there was no speed difference. After the installation was done, the SSD was very fast though, no problems at all then.

Now I have to install again and I do not want to wait again a half day just for the files to copy, so I hope anyone can point me towards a solution for this problem.

My Mainboard is a ASROCK 870 Extreme 3 , I use AHCI , AMD AHCI Bios is disabled and AHCI is enabled for SATA3_5 and 6 .

Thanks for any help.

Are you booting the installer and not running it from another OS?

If so then I'd download another ISO, try writing to flash stick using Windows 7 USB-DVD Download Tool.
Boot under USB, Removable or HD's. Flash stick install is known to be faster.

You could have a bad DVD burn - if necessary to use DVD, burn with ImgBurn at 4x speed.

Unplug all other HD's and peripherals and try SSD in first SATA port in AHCI mode.

I had the DVD Drive on Port 3 changed that to Port 5 and enabled the Combined Mode for Port 5 and 6 and then the installation went in a decent speed.