Re: [qubes-users] Recover broken bootloader

[barbudoazul93]

> 
> Was having a similar problem. I have boot installed in a separate usb and 
> after following the process of chroot... grub2 install and rebooting it ask 
> me for the passphrase and all end up with a grub> shell with the system not 
> booting. There is a way to clone my boot usb to another usb or to build a new 
> one? or better reinstall. Thanks guys.

Solved, was able to clone the boot usb before it broke definitely using:
dd if=boot.img of=/dev/sd(letter new boot USB) conv=notrunc

been boot.img the image of the old usb stick where I installed the boot 
partition when I installed Qubes. Without the conv=notrunc it didn't work, just 
if someone face a similar problem. Like I said in the previous message the 
chroot - grub-install process didn't work for me, maybe because I use FDE and 
been the boot partition in a separate USB.

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Re: [qubes-users] Recover broken bootloader

[barbudoazul93]

On Tuesday, October 31, 2017 at 10:28:48 PM UTC+1, Marek Marczykowski-Górecki 
wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA256
> 
> On Mon, Oct 30, 2017 at 08:23:39PM -0700, loke...@gmail.com wrote:
> > My laptop has started to fail to boot my 4.0rc2 installation. This started 
> > after doing a qubes-dom0-update, but I'm pretty sure that I had rebooted 
> > the machine successfully at least once since then.
> > 
> > The computer has now gone into a bootloop, and fails to display the GRUB 
> > screen. I can only assume that the bootloader is crashing. However, nothing 
> > is displayed on the screen.
> > 
> > Is there a recommended procedure to reinstall GRUB when booting from the 
> > installation media?
> 
> Standard things should work:
> 1. Boot from installation media (rescue mode)
> 2. Agree to mount the system
> 3. Chroot into /mnt/sysimage (chroot /mnt/sysimage)
> 4. If /dev is empty, mount it with: mount -t devtmpfs none /dev
> 5. Execute: grub2-install /dev/sda (or other disk, depending on your
> configuration)
> 
> Then, exit from chroot and reboot the system.
> 
> - -- 
> Best Regards,
> Marek Marczykowski-Górecki
> Invisible Things Lab
> A: Because it messes up the order in which people normally read text.
> Q: Why is top-posting such a bad thing?
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Was having a similar problem. I have boot installed in a separate usb and after 
following the process of chroot... grub2 install and rebooting it ask me for 
the passphrase and all end up with a grub> shell with the system not booting. 
There is a way to clone my boot usb to another usb or to build a new one? or 
better reinstall. Thanks guys. 

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