HI All, Recently I compiled a linux fedora kernel (2.6.27fc_x86_64bit) for stata support. After successful compilation and installation with new kernel, :- --System is not able to mount cdrom. --Always generate error, "medium not found" --dmesg have an entry some thing like " unable to understand cdrom format" I don't know what went wrong, but i cross checked my new kernel config and my new kernel have following support:- (in respect of cdrom) --SCSI device drive support [*] --iso9660 file system support [*] --ata-ide device support [*] I am attaching my kernel.conf file as attachment for better understanding. let me know if some other information is need in order to understand my issue. Also, I am highly confused in selection of modules as static or dynamic. It will be great help if any one can suggest me the rule/law behind dynamic[M] and static[*] selection of kernel modules. *I just need to ask , what if i select all kernel modules as lodable modules [M] instead of static modules [*] or vice versa !! Thanks -A