Why does not update-grub detect Fedora 13 installation?

[Tom H]

On Mon, Jul 12, 2010 at 1:42 PM, Rick Stevens <ricks at nerd.com> wrote:
> On 07/12/2010 10:20 AM, H.S. wrote:
>> On 12/07/10 12:50 PM, Suvayu Ali wrote:
>>> On Monday 12 July 2010 08:08 AM, H.S. wrote:
>>>> I am using LVM. F13 is installed with its / mounted on
>>>> /dev/mapper/vg1-lv8 and its boot on /dev/sdc5. Update-grub appears to
>>>> miss detecting the kernels in /dev/sdc5 altogether. Any idea why is
>>>> that? Is there is a bug in Fedora 13?
>>>>
>>>
>>> I think its because grub 1 doesn't have LVM support. If you need LVM
>>> support install grub2.
>>>
>>
>> Yes, that is the one I am using:
>> grub-pc   1.98+20100706-1   GRand Unified Bootloader, version 2 (PC/BIOS
>> version)
>> (sorry I skipped mentioning this earlier).
>>
>> Note that boot partitions for both distros (F13 and Debian) are on
>> non-LVM partitions precisely because even grub2 may not handle LMV boot
>> partitions properly ... not sure about this though so just wanted to be
>> cautious. Debian's /boot is on /dev/sdc3 and Fedora 13's /boot is on
>> /dev/sdc5. Their other partitions (/, /usr, /home) all are on LVM volumes.
>
> /dev/sdc5 is an extended partition.  IIRC, update-grub only checks
> primary partitions--primarily because your BIOS can't boot anything in
> an extended partition, either.

You must be remembering incorrectly. I had a netbook a few months ago
that I used for tests where I had swap on sda1 and five different
installs on sda5-sda9.