GSS2.5 support for cloning Linux is covered in
this KB. You'll see Red Hat Enterprise Linux release 4 is supported.
Have a look in the Ghost_imp_guide.pdf section 4 - Using Symantec Ghost locally. There's many different options. One way is to create a boot CD and then clone to a network share.
A common misconception since we introduced the Linux preOS boot disk seems to be that it is the only boot disk which will clone a Linux system. Actually you can use any of DOS, WinPE or Linux. (And Ghost has supported cloning Linux much longer than it has supported running on Linux.) Correspondingly the Linux preOS can also be used to clone a Windows system if memory is tight or a faster boot time is preferred.
I recommend against using -IAL and -NOLILO. They should not be necessary for cloning RHEL 4 and using them will result in taking a long time to create a huge image file (given modern HDD sizes). Also a sector-by-sector copy (which is what IAL creates) can not be edited in GhostExplorer.
Regards,
David.