[ale] What is grub > and I Killed Access to Desktop

[JD]

With all the changes to the way things are booting, extra caution is needed
these days.
* UEFI
* 512b vs 4k sectors
* MBR vs GPT

It is a dangerous world.
Hopefully, people know to stop using fdisk, sfdisk and cfdisk now.  Parted and
gparted were updated a few years ago to address these new complexities and
should be used instead.

Ok, when it comes to boot issues, there's the hardway ... screw with
grub-install ... and the easy way, use boot-repair.

Boot-repair rocks.

On 01/16/2013 08:30 AM, Marc Ferguson wrote:
> Hi folks,
> 
> I really screwed the pooch on this one. I have two issues: 1) how to use GRUB
> recovery console and 2) non-bootable LiveUSB. So; here's my first issue. I have
> two hard drives and my original setup was:
> 
> * sda1 - windows (marked as boot)
> * sda2 - /boot
> * sda3 - lvm (fedora)
> * sdb1 - data
> 
> With the release of Fedora 18 I figured I'll finally remove my Windows partition
> and turn it into a home directory. I fire up gparted and do just that. I'm not
> familiar with UUID so I simply changed the "label" to "home." I then use rsync
> to copy my existing /home directory into the new partition. All seems well...
> 
> I reboot and after GRUB selects the latest instance of Fedora 17 I'm sent to
> some sort of recovery mode. I can only log in as root. My data partition is
> still mounted, but my newly created home partition no longer shows any data in
> it. I wonder if it has something to do with me changing it from NTFS to ext4.
> 
> Either way I'm thinking that my GRUB is pointing to the wrong partition and
> stupidly run "grub install /dev/sda1". Now when I reboot and GRUB fires it
> immediately goes into a GRUB recovery console and I'm completely lost at this point.
> 
> At this point I feel I've gone way down into the rabbit hole. I dont' mind
> losing the home directories since my data partition is still functioning. I want
> to just start fresh and do a clean install of Fedora 18. My main beef is I can't
> boot from the newly created Fedora 18 LiveUSB. It works on my laptop, but not on
> my desktop. When in GRUB recovery I ran "grub> usb" and it's supposed to show
> any USB's plugged in, but nothing shows up.
>