boot from a large iso file

[sonipriy]

Hi,

I have a large Centos OS (custom) iso file. The size of iso is 3GB. I am using following options and none of the options are working-

a. Sanboot
sanboot --no-describe --drive 0x80 <web server address>/<iso name>

Doing this gives error - EDD : Error 0400 reading sector 1300633
No DEFAULT or UI configuration directive found!

b. Memdisk
set base <web address>
kernel ${base}/memdisk
initrd ${base}/<iso file name>
imgargs memdisk iso raw
boot


This gives error :- El Torito BVD sanity check failed
El Torito boot catalog sanity check failed
MEMDISK: Image seems to have fractional and cylinder
MEMDISK: Image appears to be truncated


Is there a way to load and boot large ISO files from http webserver using iPXE ?