*** This bug is a duplicate of bug 428318 ***
https://bugs.launchpad.net/bugs/428318
@mindseye1: First, you should run "sudo blkid -p /dev/sda1" and make
sure it returns "/dev/sda1: ambivalent result (probably more filesystems
on the device)" (substitute sda1 by your missing partition)
This means that there is a vfat header in the first block (512 bytes) of
the partition and an ext2/3 header in the following blocks.
Next, you should make a full and verified backup of your partition, in
case anything goes wrong (e.g. by mounting with an old live-CD).
Last, "sudo dd bs=512 count=1 if=/dev/zero of=/dev/sda1" zeros the first
block, thus removing the vfat header. Note the MBR will be unaffected by
this.
It is generally a good idea to read the manpages of the commands you are
told to execute (e.g. "man dd").
--
After upgrade to Karmic, root partition (sda1) is missing /dev/sda1 is missing
from /dev/disk/by-uuid
https://bugs.launchpad.net/bugs/464411
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