Re: Boot displays just one dot and hangs - LBA48 during grub2-install and old BIOS during booting

[sashab]

Hello Juhani,

I'm a little confused if you had grub or grub2 installed on your HD.
For now I'll assume there is grub2.

However, I'd try the following:
# Boot from your flash drive
# Mount your root, boot and other partitions to /mnt
# chroot
mount -t proc /proc /mnt/proc
mount -t sysfs /sys /mnt/sys
mount -o bind /dev /mnt/dev
mount -o bind /run /mnt/run
chroot /mnt /bin/bash
# Check if your fstab is correct (contains right UUIDs, etc.)
cat /etc/fstab
blkid
# Install GRUB (assuming your SSD is /dev/sda):
grub2-install --target=i386-pc /dev/sda
# Backup the "old" cfg
mv /boot/grub2/grub.cfg /boot/grub/grub.cfg.bak
# Create a new one
grub2-mkconfig -o /boot/grub/grub.cfg
# exit, sync, umount, reboot and hopefully success

(By running grub2-install in chroot it should determine modules you
need automagically.)

With kind regards,
    sashab


On 11/28/18 7:28 PM, Juhani Jaakola wrote:
> On 11/28/18, sashab <address@hidden> wrote:
> > first of all: About reinstalling GRUB:
> >     - Do you reinstall from chroot? You should.
> >     - Have you also bind-mounted /dev and /run? You should.
> >       (Of course also mount /proc and /sys with matching fs-types.)
>
> No, but shouldn't option --boot-directory do all that for me? Like
> this (see 
> https://forums.fedoraforum.org/showthread.php?319160-Boot-displays-just-one-dot-and-hangs&p=1815138#post1815138
> ):
>
> grub2-install --debug --debug-image=all --modules=gzio
> --modules=normal --disk-module=ata
> --boot-directory=/run/media/liveuser/_boot/ /dev/sda
>
> Here I have booted from Fedora 28 live USB stick and mounted the /boot
> partition of my SSD on /run/media/liveuser/_boot/. The SSD is
> /dev/sda.
>
> > About debugging:
> > Are you sure it's a blockdev-Problem?
>
> No. How could I verify that?
>
> > Do you have a timeout set in your grub.cfg?
> > Set one and see what happens.
>
> Sorry I don't understand what difference it could make?
>
> > One thing you may try is to install GRUB to a flash drive,
> > get there and use the configfile [1] command to load the config from
> > your shiny SSD.
>
> I tried to boot from another USB stick with just GRUB on it, and then
> load modules from the SSD manually in rescue mode. In some point
> insmod just hangs??? See
> https://forums.fedoraforum.org/showthread.php?319160-Boot-displays-just-one-dot-and-hangs&p=1812590#post1812590
>
> Regards, Juhani Jaakola