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Old 08-19-2015, 01:24 PM   #1
KelleyConfig
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Registered: Jul 2015
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Newbie lost his password


Lost my password and lost my way. I’m in the process of learning Centos7 and had to move to another project for the last month. Returned to my computer and realized I didn’t write down my password anywhere. Oops.

So I went on line and found this solution:

1 - At the boot menu, press e to edit the existing kernel

2 - Next, scroll down to the list until you see the line underlined below ( ro ) . What we need to do is change that ro to rw and start into a bash shell. It should look like this rw init=/sysroot/bin/sh.

//So far so good. I’m now in the shell. However the next instruction is to type “chroot /sysroot” at the prompt. The prompt in the instruction, however, is :/# and my prompt is dracut:/#

//When I type chroot /sysroot at my prompt (dracut:/#), I get “failed to run command ‘/bin/sh’: No such file or directory.

//After this, the instructions are to create a new password via:

3 - Finally, run the commands below to change the root password - passwd root

4 - You’ll be prompted to create and confirm a new password. After creating the password, run the commands below to update SELinux parameters - touch /.autorelabel

Can’t seem to get past step 2.

Any help or guidance much appreciated
 
Old 08-19-2015, 02:03 PM   #2
HMW
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Umm...

What happens if you type:
Code:
chroot /sysroot /bin/bash
Instead of only:
Code:
chroot /sysroot
Best regards,
HMW
 
Old 08-19-2015, 02:43 PM   #3
HMW
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...on second thought. The guide you followed seems to have some crucial steps missing.
Such as:
Code:
# mount –o remount,rw /sysroot
See this link instead (Procedure 24.2. Resetting the Root Password Using rd.break):
https://access.redhat.com/documentat...Using_rd.break

And here's another guide (with pictures!):
http://linoxide.com/linux-how-to/res...rhel-centos-7/

Last edited by HMW; 08-19-2015 at 02:46 PM.
 
Old 08-19-2015, 02:49 PM   #4
KelleyConfig
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Registered: Jul 2015
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Thanks HMW. You're probably right, however I opted to just do a fresh install. Now I think l'll tattoo the password to my forehead.

Best,
Kelley
 
Old 08-19-2015, 02:49 PM   #5
wagscat123
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Location: Maryland-Pennsylvania border, USA
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The way I've usually gotten around that is to enter "init = /bin/bash" as a kernel boot option (in GRUB 2, select CentOS 7, press "e", and add it to the line that says "linux" or "linux16"). At the resulting bash shell, you can use passwd to reset the root password, then do an ugly reboot since systemd wasn't loaded. If you're using an older system, you may have to hook up a PS/2 keyboard for this to work.
 
  


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