To get NoRamdisk Boot,
you must get SystemDrive (X:) writable, via
CreateISO+FBWF or WimBoot or BootDI
Here are settings to get Gena boot without Ramdisk:

update: with Default Gena, we had simplified things,
no need to change Temp settings on Gena anymore,
with other words: Only Change Location: Settings

If you have plan to use Gena on a LowRam PC,
Don't forget to decrease writable space value
Example:
WimBoot

Addition:
+
If used with CreateISO, if you see troubles with folder names (None Enu sources), enable
Gena\Build\Profile Prepare\"Use Enu Profile"
ps: you don't need such thing with WimBoot, BootDI, or when running Gena on USB stick, etc. this is .iso special case...
+
If used with CreateISO,
to cosmetically see nice folder names (localized , system default)
Enable
Gena\Basic\Build\Profile Create Folders\"Add Folder Desktop.ini"
Gena\Basic\Build\Profile Create Folders\"Add Cmd files"
Gena\Basic\Build\Profile Create Folders\"Add Startup attrib +s"
ps: you don't need such thing with WimBoot, BootDI, or when running Gena on USB stick, etc. this is .iso special case...
+
If used with CreateISO,
and if your source is one of Extended Language ( Chinese Japanese Korean ),
and if CreateISO fails,
Disable
Gena\Basic\Build\Profile Handling and Settings\"Convert QL - DT desktop.ini"
ps: you don't need such thing with WimBoot, BootDI, or when running Gena on USB stick, etc. this is .iso special case...

Edit:
Also see Oscar " User Profile in X: and no ramdrive " topic
http://theoven.org/index.php?topic=1763.0