[root@abc03kkk ~]# su - gbuora
-bash-3.2$ dmesg | grep RAM
BIOS-provided physical RAM map:
xen_mem: balloon driver: current pages 2022400 totalram_pages 2022400 RAM bias 0


This is what I got.

other memory details:

-bash-3.2$ free
total used free shared buffers cached
Mem: 8089600 1357540 6732060 0 72100 833136
-/+ buffers/cache: 452304 7637296
Swap: 10288440 0 10288440

-bash-3.2$ cat /proc/meminfo
MemTotal: 8089600 kB
MemFree: 6731952 kB
Buffers: 72124 kB
Cached: 833136 kB
SwapCached: 0 kB
Active: 415700 kB
Inactive: 645884 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 8089600 kB
LowFree: 6731952 kB
SwapTotal: 10288440 kB
SwapFree: 10288440 kB
Dirty: 928 kB
Writeback: 0 kB
AnonPages: 156276 kB
Mapped: 37616 kB
Slab: 70840 kB
PageTables: 17560 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 14333240 kB
Committed_AS: 535096 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 7168 kB
VmallocChunk: 34359731199 kB

I got another version of the same project using which I can open the installation wizard. Need to see what is the change in the project that fixed this issue. May be missing some required files in previous version as you suggested.

Thanks a ton Pan for your help.