Problems with 7.3 instalation

[Vladimir Maloviæ <vlado cirus dhz hr>]

Hello,
I have downloaded RedHat 7.3.
During instalation, it freezes. Last messages are:

hda: 8420832 sectors (4311MB) w/512 KiB ...
hdc: ATAPI  40x CD-ROM drive, 128 kb Cache
Uniform CD-ROM driver version: 3.12
ide-floppy driver 0.99.newide
Partition check:
 hda:

I allredy have RH 6.2 installed on disk. But the same is with new disk.

best regards,
Vladimir