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Jan Silva
Jan Silva

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how to fix cryptographed ubuntu gdm3

# tentou montar normalmente e não conseguiu por que era crytografado
     sudo mount /dev/sda1 sda1 -o uid=1000,gid=1000
     sudo umount sda1

# instalou o cryptsetup
   1  sudo apt-get install cryptsetup 

# encontrar sua partição crytografada
   2  blkid | grep "crypto_LUKS"

# abrir partição cryptografada, vai pedir senha
   3  sudo cryptsetup luksOpen /dev/nvme0n1p3 mypartition


# descobrir o nome da partição vg
   4  sudo vgscan 
   5  sudo lvdisplay 

# montar partição vg
   6  sudo mount /dev/vgubuntu/root sda1


# processo de chroot
   7  sudo mount --bind /proc/ /mnt/sda1/proc/
   8  sudo mount --bind /dev/ /mnt/sda1/dev/
   9  sudo mount --bind /sys/ /mnt/sda1/sys/
  10  sudo mount --bind /dev/pts/ /mnt/sda1/dev/pts
  11  sudo cp -L /etc/resolv.conf /mnt/sda1/etc/resolv.conf 
  12  sudo chroot /mnt/sda1 /bin/bash

# agora dentro da máquina, reinstalar o gdm
  13  sudo apt-get reinstall gdm3

# volte pra a máquina do pendrive
  14  exit

# desfaça as montagens e feche o hd novamente com a crpytografia
  15  sudo umount /mnt/sda1/proc 
  16  sudo umount /mnt/sda1/sys
  18  sudo umount /mnt/sda1/dev/pts 
  19  sudo umount /mnt/sda1/dev

# listar as partições vg
  20  sudo dmsetup info -C

# mudar para a vgroot do pendrive
  21  sudo vgchange -a n vgubuntu

# fechar partição novamente
  22  sudo cryptsetup close mypartition

# reiniciar e ser feliz
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