My Machine Won't Boot

[Rejean Proulx]

> Rejean Proulx wrote:
>> I reinstalled my entire system and now have a kernel and grub, but the 
>> machine won't get passed the device listing. It is as if it can't figure 
>> out where to boot from. The boot order is correct in the bios. It is as 
>> if there is no MBR on /dev/sda? Any suggestions?
>
> Yes, you may not have installed GRUB properly. The MBR is a physical
> location on disc, so there IS an MBR there, perhaps not a valid one.
> For the BIOS to load it, the last two bytes must be 0x55 0xAA (I
> forget the order). I can't tell from what you wrote exactly what
> the symptoms are. Could you please tell us what hapens when you try
> to boot? Does GRUB execute at all? If it does, what does it
> put on the screen?
First it gets by the part where it wants delete for bios, then control-s for 
raid utility.

Then it gives a long list of devices. It stops. Grub doesn't seem to come up 
at all.

How do I make a grub floppy?

>
>> I looked at my other linux computer which is Debian. the only difference 
>> I can see is that my other computer has
>> root (hd0,1) on working computer and
>> root (hd0,0) on the  broken machine. What does that number to the right 
>> of the comma mean? How do you fix an MBR?
>
> This is the way GRUB names discs/partitions. (hd0,0) is the first
> partition of the first disc, and (hd0,1) is the second partition
> of the first disc.
>
> How one fixes an MBR depends on in what way it is broken.
> With more information perhaps someone here can help you. I'm not
> a GRUB guru.
>
> Do you have a floppy on that system? I found that, when I was having
> problems with boot, having a GRUB boot floppy was a big help. After
> I got to where I could boot from the floppy, I knew what to put into
> the GRUB configuration files.
>
> Mike
> -- 
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