You are correct. There was some issue with DVD itself.

I verified checksum and have found that downloaded file is perfect. Lately, I burned DVD version on another
disk again and installed Solaris 10 on my system.

Still I am dealing with few issues.

My system config:
Dell D-620 latitude, Intel Dual Core 2GHz, 2.5GB DDR2 RAM and 80GB HDD.

I have created three partitions on disk C(20 GB -- Windows XP is running), D(35 GB - free space for NTFS) and E(20 GB - installed Solaris 10).
memory mounting for solaris:
/ 10240 MB (I intend to install Oracle 11g later)
swap 4096MB
32 MB
/opt 2096MB
/opt/oracle 1096 MB
/export/home 2464 MB
Problems are:
1. When I restart my computer and choose Sun Solaris from GNU GRUB screen I do not reach upto solaris login window and it seems that system is going to sleep for infinite time after showing below information. It never fetches "Hostname: johnjerry"
-------------------------------------
SunOS Release 5.20 Version Generic_118855-33 32-bit
Copyright 1983-2006 Sun Microsystem, Inc. All rights reserved.
Use is subject to license terms.
_
-----------------------------------------
2. Next time I started Windows XP and restarted system. Now I chose Solaris from GRUB screen. this time, I got following messages.
----------------------------------
SunOS Release 5.20 Version Generic_118855-33 32-bit
Copyright 1983-2006 Sun Microsystem, Inc. All rights reserved.
Use is subject to license terms.
Hostname: johnjerry
Configuring devices.
/dev/rdsk/c0d0s7 is clean
/dev/rdsk/c0d0s5 is clean
/dev/rdsk/c0d0s6 is clean

johnjerry console login:
...
---------------------------
Now I got blue graphical frontend to login as root user. However, my keyboard did not work and, from second boot, I did not get any
response from mice device also. Still, I do not know what is the problem and I am not able to do anything further.
Please assist.