Red Hat Bugzilla – Bug 71455
Bootloader unable to boot after restart
Last modified: 2007-04-18 12:45:30 EDT
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User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows 95)
Description of problem:
The installer automatically disables LBA32 even when installing /boot past 1024
cylinders, which makes the OS non-bootable (when default value is used). In
previous versions (7.2) this is not a problem and the installer seems to
configure itself appropriately. The help item for LBA32 makes it seem
unnecessary to install.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. New install (from CD or other source)
2. Autopartition the drive (with large partition at beginning of drive that
will be left intact)
3. /boot will be installed beyond 1024 cylinders (warning given)
4. LBA32 is not checked by default
5. Complete install
6. System will not boot to that partition (either from bootloader on mbr or
7. linux rescue from cd will find the redhat installation
Actual Results: Upon reboot the redhat installation will not boot (can't
find /boot beyond 1024 cylinders without LBA32 enabled). Cannot boot from
floppy disk (created during install process) either. linux rescue from cd will
find the redhat installation.
Expected Results: LBA32 should be checked by default when /boot is beyond 1024
cylinders so system will boot by default -- this seems to be the case in redhat
Unfortunately, some BIOSes are buggy and don't properly support the LBA32 probe.
That's why we have the checkbox to force it if you need to do so.