GRUB no long gives menu on boot

[Matt Zagrabelny <mzagrabe@d.umn.edu>]

Greetings,

I have the following setup which worked well after performing a squeeze install:

/boot -> Software RAID5
/ -> LVM on top of Software RAID5

I lost a disk of my RAID array a few months ago and ever since
replacing it and rebuilding the arrays, I no longer get a menu of
kernels to boot from in GRUB. Instead I get a prompt.

I have tried reinstalling GRUB from a Squeeze rescue flash drive, but
there is no change.

Comments and help appreciated.

Thanks,

-mz