Did you format the non swap partitions in ext4?
Have other S.O in side, dual boot?
Or the installation was done on a non master HD?
I saw it when I installed the Slack in a second HD at side windows (master HD) + other windows (slave HD, same that slack) in a old optplex 240 Dell, I boot from DVD till today hehe.
You speak Spanish, so I think it may help:
I think that you may try to install again