How do I drop to shell from rescue CD???
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From: Ohhhh maaan on 18 May 2010 22:58 I have a kernel panic and need to fix a typo. I don't have the install disks, and I just want to use the CD to access the shell prompt so I can run the commands need. I can't get to the grub boot loader screen. Anyway, I run this and it asks for linux or linux text, and no matter what I do, I can't just have it load the kernel image from the rescue CD and drop into shell. It always wants to install and asks for the images. How in the world can someone just drop into a shell prompt? I've used Linux years ago and I think I recall you could just type linux single or linux emergency at the boot CD, but nothing works with this new CentOS 5.x rescue CD. I'm stuck at "boot:" and nothing I try just drops/boots me into a shell prompt. Please, help! :)
From: Keith Keller on 18 May 2010 23:44 ["Followup-To:" header set to comp.os.linux.misc.] On 2010-05-19, Ohhhh maaan <nobodyhere(a)example.com> wrote: > > I've used Linux years ago and I think I recall you could just type linux > single or linux emergency at the boot CD, but nothing works with this > new CentOS 5.x rescue CD. I'm stuck at "boot:" and nothing I try just > drops/boots me into a shell prompt. Please, help! :) Close: it's linux rescue, not emergency: http://www.centos.org/docs/5/html/Installation_Guide-en-US/s1-rescuemode-boot.html But I believe the onscreen text tells you to hit F5 for help and other boot options, so you should look for that next time. See e.g. http://www.go2linux.org/pics/centos-base/Screenshot.png Hitting F5 gives you more information on booting the CD in rescue mode. --keith -- kkeller-usenet(a)wombat.san-francisco.ca.us (try just my userid to email me) AOLSFAQ=http://www.therockgarden.ca/aolsfaq.txt see X- headers for PGP signature information
From: Ohhhh maaan on 19 May 2010 02:39 Keith Keller wrote: > ["Followup-To:" header set to comp.os.linux.misc.] > > On 2010-05-19, Ohhhh maaan <nobodyhere(a)example.com> wrote: >> >> I've used Linux years ago and I think I recall you could just type >> linux single or linux emergency at the boot CD, but nothing works >> with this new CentOS 5.x rescue CD. I'm stuck at "boot:" and nothing >> I try just drops/boots me into a shell prompt. Please, help! :) > > Close: it's linux rescue, not emergency: > > http://www.centos.org/docs/5/html/Installation_Guide-en-US/s1-rescuemode-boot.html > > But I believe the onscreen text tells you to hit F5 for help and > other boot options, so you should look for that next time. See e.g. > > http://www.go2linux.org/pics/centos-base/Screenshot.png > > Hitting F5 gives you more information on booting the CD in rescue > mode. > > --keith > Yes, I know what it says. I did that already, and it just goes to the same install screen. Doesn't matter if I type linux, linux text, linux rescue, or just hit enter, or try linux single, linux emergency, or anything else, it _always_ goes to the text menus and doesn't allow me to break out of it or drop to a shell prompt, or anything else. It just wants the install disk images. In fact, the link you've provided says it all: "Once you have booted using one of the described methods, add the keyword rescue as a kernel parameter. For example, for an x86 system, type the following command at the installation boot prompt: linux rescue You are prompted to answer a few basic questions, including which language to use. It also prompts you to select where a valid rescue image is located. Select from Local CD-ROM, Hard Drive, NFS image, FTP, or HTTP. The location selected must contain a valid installation tree " It simply does not allow me to skip or select any options that allow me to even get to the point where I can get shell access. I definitely recall that the boot CD's allowed a person to jump right into a shell if they wanted, even without using the installed bootloader, and I can't find any information to show where someone can just boot from the CD's kernel and drop into a shell and run commands (it always wants the install images). The problem is, I'm 5,000 miles away working over a KVM. All I need to do, is find this one thing so I fix this problem, and I just can't find it. No one else seems to know. This strikes me as odd. Believe me, trying to convince some DC tech that only power cycles systems to do anything is not going to happen, so if anyone can help me find this one trivial thing, it would be very appreciated.
From: unruh on 19 May 2010 03:22 On 2010-05-19, Ohhhh maaan <nobodyhere(a)example.com> wrote: > I have a kernel panic and need to fix a typo. I don't have the install > disks, and I just want to use the CD to access the shell prompt so I > can run the commands need. I can't get to the grub boot loader screen. > > Anyway, I run this and it asks for linux or linux text, and no matter > what I do, I can't just have it load the kernel image from the rescue > CD and drop into shell. It always wants to install and asks for the > images. How in the world can someone just drop into a shell prompt? > > I've used Linux years ago and I think I recall you could just type linux > single or linux emergency at the boot CD, but nothing works with this > new CentOS 5.x rescue CD. I'm stuck at "boot:" and nothing I try just > drops/boots me into a shell prompt. Please, help! :) Did you try typing "rescue" when it is stuck at "boot:"?
From: Robert Nichols on 19 May 2010 10:07
On 05/18/2010 09:58 PM, Ohhhh maaan wrote: > I have a kernel panic and need to fix a typo. I don't have the install > disks, and I just want to use the CD to access the shell prompt so I > can run the commands need. I can't get to the grub boot loader screen. > > Anyway, I run this and it asks for linux or linux text, and no matter > what I do, I can't just have it load the kernel image from the rescue > CD and drop into shell. It always wants to install and asks for the > images. How in the world can someone just drop into a shell prompt? > > I've used Linux years ago and I think I recall you could just type linux > single or linux emergency at the boot CD, but nothing works with this > new CentOS 5.x rescue CD. I'm stuck at "boot:" and nothing I try just > drops/boots me into a shell prompt. Please, help! :) Once you get to the installer GUI, there should be a shell available on one of the other VTs. Try ctrl-alt-F2. -- Bob Nichols AT comcast.net I am "RNichols42" |