Problems while migrate to EHP7 with SUM

Hi exports,

I have problem while migrate to EHP7 from 4.6C with SUM.

I download all DVDs, export upgrade, installation upgrade, java componente, kernel, etc etc and I still got DVD not found. The error that appear is:

Enter mount points for the DVDs of the kit "BS2013_SR2" required for the procedure

Enter at least the mount point containing Export DVD for product ERP

The requested data carrier is not mounted on any of the mount points you entered.

Dispose old mount points and rebuild scope

I found in txt

05f57780-dc0f-11e3-ab24-005056a214d6              upgrade   BS7I2013_SR2_UPGRADE_ERP

What is the DVD?

Thanks in avdance,

Regards,