Unable to boot from HD

[Van Den Abeele Kristof]

Hello List ,   I''ve installed Redhat 8.0 last weekend. All went fine , except that I'm not able to boot from HD.   Booting from the created diskette is no problem. How can I fix this , are their some loggings I should look at , ... ?   I know under a Win environment there is something such as "sys a: c:"  & " fdisk /mbr " Any similiar commands for the Linux env ?   Thanks ,   Kristof