ubuntu cannot boot after modifying /etc/passwd
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0
The following are the steps I destroyed my ubuntu:
- I installed Windows 10 and Ubuntu 18.04 in my computer;
- I modified the /etc/default/grub and set
GRUB_TIMEOUT = 0, then I cannot see the Grub screen; (This is what I wanted.) - I modified the /etc/passwd and set
username:x:1000:1000::to beusername:x:0:0::, then the system asked me to create a new user when I reboot the system. (I intended to raise the privilege of the username.) - The result is that I cannot boot the system anymore.
- If I press ESC when booting, it will show
A start job is running for hold until boot process finishes up (~min ~s/no limit). - The installation CD can still work.
I need to recover the system.
boot passwd
edited Feb 26 at 12:25
terdon♦
133k32264443
asked Feb 26 at 11:48
haikhaik
1
|
show 1 more comment
0
The following are the steps I destroyed my ubuntu:
- I installed Windows 10 and Ubuntu 18.04 in my computer;
- I modified the /etc/default/grub and set
GRUB_TIMEOUT = 0, then I cannot see the Grub screen; (This is what I wanted.) - I modified the /etc/passwd and set
username:x:1000:1000::to beusername:x:0:0::, then the system asked me to create a new user when I reboot the system. (I intended to raise the privilege of the username.) - The result is that I cannot boot the system anymore.
- If I press ESC when booting, it will show
A start job is running for hold until boot process finishes up (~min ~s/no limit). - The installation CD can still work.
I need to recover the system.
boot passwd
edited Feb 26 at 12:25
terdon♦
133k32264443
asked Feb 26 at 11:48
haikhaik
1
2
Have you tried mounting the root filesystem using the installation CD and reverting/etc/passwd?
– Torin
Feb 26 at 12:02
@Torin Thanks for your comment. I tried mounting it but I can only see the files under the directory of username. That is I cannot find the file/etc/passwd.
– haik
Feb 26 at 12:05
1
Sounds like you have seperate partitions for home and root. There should be another mountable partition containing your root which will contain/etc/passwd
– Torin
Feb 26 at 12:11
And it's weird that when I runsudo chroot /mnt, it will hintfailed to run command ‘/bin/bash’: No such file or directory. But I indeed see the file/bin/bash.
– haik
Feb 26 at 12:18
3
You're mounting the wrong filesystem then.
– Kusalananda
Feb 26 at 12:27
|
show 1 more comment
0
0
0
The following are the steps I destroyed my ubuntu:
- I installed Windows 10 and Ubuntu 18.04 in my computer;
- I modified the /etc/default/grub and set
GRUB_TIMEOUT = 0, then I cannot see the Grub screen; (This is what I wanted.) - I modified the /etc/passwd and set
username:x:1000:1000::to beusername:x:0:0::, then the system asked me to create a new user when I reboot the system. (I intended to raise the privilege of the username.) - The result is that I cannot boot the system anymore.
- If I press ESC when booting, it will show
A start job is running for hold until boot process finishes up (~min ~s/no limit). - The installation CD can still work.
I need to recover the system.
boot passwd
edited Feb 26 at 12:25
terdon♦
133k32264443
asked Feb 26 at 11:48
haikhaik
1
The following are the steps I destroyed my ubuntu:
- I installed Windows 10 and Ubuntu 18.04 in my computer;
- I modified the /etc/default/grub and set
GRUB_TIMEOUT = 0, then I cannot see the Grub screen; (This is what I wanted.) - I modified the /etc/passwd and set
username:x:1000:1000::to beusername:x:0:0::, then the system asked me to create a new user when I reboot the system. (I intended to raise the privilege of the username.) - The result is that I cannot boot the system anymore.
- If I press ESC when booting, it will show
A start job is running for hold until boot process finishes up (~min ~s/no limit). - The installation CD can still work.
I need to recover the system.
boot passwd
boot passwd
edited Feb 26 at 12:25
terdon♦
133k32264443
asked Feb 26 at 11:48
haikhaik
1
edited Feb 26 at 12:25
terdon♦
133k32264443
asked Feb 26 at 11:48
haikhaik
1
edited Feb 26 at 12:25
terdon♦
133k32264443
edited Feb 26 at 12:25
terdon♦
133k32264443
edited Feb 26 at 12:25
terdon♦
133k32264443
133k32264443
asked Feb 26 at 11:48
haikhaik
1
asked Feb 26 at 11:48
haikhaik
1
asked Feb 26 at 11:48
haikhaik
1
1
2
Have you tried mounting the root filesystem using the installation CD and reverting/etc/passwd?
– Torin
Feb 26 at 12:02
@Torin Thanks for your comment. I tried mounting it but I can only see the files under the directory of username. That is I cannot find the file/etc/passwd.
– haik
Feb 26 at 12:05
1
Sounds like you have seperate partitions for home and root. There should be another mountable partition containing your root which will contain/etc/passwd
– Torin
Feb 26 at 12:11
And it's weird that when I runsudo chroot /mnt, it will hintfailed to run command ‘/bin/bash’: No such file or directory. But I indeed see the file/bin/bash.
– haik
Feb 26 at 12:18
3
You're mounting the wrong filesystem then.
– Kusalananda
Feb 26 at 12:27
|
show 1 more comment
2
Have you tried mounting the root filesystem using the installation CD and reverting/etc/passwd?
– Torin
Feb 26 at 12:02
@Torin Thanks for your comment. I tried mounting it but I can only see the files under the directory of username. That is I cannot find the file/etc/passwd.
– haik
Feb 26 at 12:05
1
Sounds like you have seperate partitions for home and root. There should be another mountable partition containing your root which will contain/etc/passwd
– Torin
Feb 26 at 12:11
And it's weird that when I runsudo chroot /mnt, it will hintfailed to run command ‘/bin/bash’: No such file or directory. But I indeed see the file/bin/bash.
– haik
Feb 26 at 12:18
3
You're mounting the wrong filesystem then.
– Kusalananda
Feb 26 at 12:27
2
2
Have you tried mounting the root filesystem using the installation CD and reverting
/etc/passwd?– Torin
Feb 26 at 12:02
Have you tried mounting the root filesystem using the installation CD and reverting
/etc/passwd?– Torin
Feb 26 at 12:02
@Torin Thanks for your comment. I tried mounting it but I can only see the files under the directory of username. That is I cannot find the file
/etc/passwd.– haik
Feb 26 at 12:05
@Torin Thanks for your comment. I tried mounting it but I can only see the files under the directory of username. That is I cannot find the file
/etc/passwd.– haik
Feb 26 at 12:05
1
1
Sounds like you have seperate partitions for home and root. There should be another mountable partition containing your root which will contain
/etc/passwd– Torin
Feb 26 at 12:11
Sounds like you have seperate partitions for home and root. There should be another mountable partition containing your root which will contain
/etc/passwd– Torin
Feb 26 at 12:11
And it's weird that when I run
sudo chroot /mnt, it will hint failed to run command ‘/bin/bash’: No such file or directory. But I indeed see the file /bin/bash.– haik
Feb 26 at 12:18
And it's weird that when I run
sudo chroot /mnt, it will hint failed to run command ‘/bin/bash’: No such file or directory. But I indeed see the file /bin/bash.– haik
Feb 26 at 12:18
3
3
You're mounting the wrong filesystem then.
– Kusalananda
Feb 26 at 12:27
You're mounting the wrong filesystem then.
– Kusalananda
Feb 26 at 12:27
|
show 1 more comment
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2
Have you tried mounting the root filesystem using the installation CD and reverting
/etc/passwd?– Torin
Feb 26 at 12:02
@Torin Thanks for your comment. I tried mounting it but I can only see the files under the directory of username. That is I cannot find the file
/etc/passwd.– haik
Feb 26 at 12:05
1
Sounds like you have seperate partitions for home and root. There should be another mountable partition containing your root which will contain
/etc/passwd– Torin
Feb 26 at 12:11
And it's weird that when I run
sudo chroot /mnt, it will hintfailed to run command ‘/bin/bash’: No such file or directory. But I indeed see the file/bin/bash.– haik
Feb 26 at 12:18
3
You're mounting the wrong filesystem then.
– Kusalananda
Feb 26 at 12:27