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Re: Boot displays just one dot and hangs - LBA48 during grub2-install an

From: sashab
Subject: Re: Boot displays just one dot and hangs - LBA48 during grub2-install and old BIOS during booting
Date: Wed, 28 Nov 2018 18:14:34 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.3.0

Hello Juhani,

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.)

About debugging:
Are you sure it's a blockdev-Problem?
Do you have a timeout set in your grub.cfg?
Set one and see what happens.

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.

With kind regards,


On 11/28/18 3:51 PM, Juhani Jaakola wrote:
The IDE hard disk of my old IBM R50p laptop failed, so I replaced it
with a new IDE SSD (model PA25-32). I booted with a Fedora 28 LXDE
live USB stick and installed Fedora 28 to my new SSD. When I try to
boot, the system displays just one dot (a period) in the top left
corner and hangs. I have to use the power button to reboot from that

When I boot again with Fedora 28 LXDE live USB stick, I can see that
the files in the new SSD are intact. I tried to re-install GRUB
several times, but I get always the same results, except if I use
option "--disk-module=native" then boot hangs but it displays two

In the live USB stick I can see that the SSD is in LBA48 mode:

[   10.059225] ata1.00: ATA-9: PA25-32, 20150807, max UDMA/133
[   10.059228] ata1.00: 62377984 sectors, multi 0: LBA48

The BIOS of my R50p is 1RETDIWW (3.14 ) and EC is 1RHT71WW-3.04. The
BIOS is dated 20 Jan 2005. As far as I know, the EC (Embedded
Controller) firmware is the latest possible and the latest BIOS was
published 18 Jun 2007. The BIOS change logs do not show any changes to
booting or handling disks.

I have written details of my struggle to posting:

It seems that booting proceeds the longest time when I use
"--disk-module=ata" but it still hangs!

My theory is that when I install GRUB (with the live USB stick), the
disk is in LBA48 mode. But when the system is booting and loading
parts of GRUB, the BIOS is not using LBA48 mode. So the disk geometry
is seen in different ways during installation time and booting, which
causes GRUB to read garbage and the system hangs when executing that

Any ideas? How can I debug this?

Regards, Juhani Jaakola

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