Error 27 Unrecognized Command Grub4dos
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Lỗi Error 27 Unrecognized Command
more about hiring developers or posting ads with us Unix & Linux Questions Tags Users Badges Unanswered Ask Question _ grub ls error 27 unrecognized command Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute: Sign up Here's how error 27 unrecognized command grub centos it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Trouble booting server from GRUB prompt up vote 4 down vote favorite I just installed CentOS 6.2 on my server but it keeps going to the GRUB prompt. I've never used Grub before but did some digging online. Looks like I have to run the
Grub Filesystem Type Unknown
kernel command before I can boot the system. However, the kernel command is not running. As I installed the OS I checked the box that said something like "Install boot loader on /dev/sda". The following is what I've done: grub> find /vmlinuz-2.6.32-220.el6.x86_64 (hd1,0) grub> root (hd1,0) grub> kernel /vmlinuz-2.6.32-220.el6.x86_64 root=/dev/sda1 Error 27: Unrecognized command I've tried it with and without the root=/dev/sda1, just /dev/sda, also tried a ro inserted in the middle but nothing works. I've read the docs but at a bit of a loss. Any suggestions? linux centos grub2 share|improve this question edited Dec 27 '13 at 0:39 Braiam 16.9k955100 asked Feb 8 '12 at 22:43 ngramsky 12113 migrated from serverfault.com Feb 8 '12 at 23:17 This question came from our site for system and network administrators. I suggest writing a real question... not "any suggestions?" –Chris S Feb 8 '12 at 23:18 The question is 'How to boot the server', as noted in the title. I've had my questions downgraded in the past for not showing what I have tried thus far. I'm trying to boot the server and have attempted to do so with the following
Grub4dos Javascript Disabled Detected You currently have javascript disabled. Several functions may not work. Please re-enable javascript to access full functionality. grub4dos -- "set" command is unknown Started by bobjunga , Nov 05 2013 09:14 PM wenv multiboot kernel Please log in to error 8 kernel must be loaded before booting reply 5 replies to this topic #1 bobjunga bobjunga Newbie Members 11 posts United States grub legacy commands Posted 05 November 2013 - 09:14 PM My grub4dos USB stick does not recognize the "set" command. i.e. "set foo="hi"" results in "error
Grub List Disks
27: Unrecognized command" error. Maybe I just need to get a later version. The download page shows 0.4.4 deing the latest but that is from 2009. I could not get the latest from git to configure on my http://unix.stackexchange.com/questions/31226/trouble-booting-server-from-grub-prompt ubuntu precise machine. I have a 0.4.4 grub.exe I got from a MultiBootUSB 4.7 disk. My usb stick uses grub2 in its MBR. I use "linux /grub.exe --config-file=mymenu.lst" to pass controll to grub4dos. When I run a menuitem that uses "set" I get the error. I have reasearched and believe that the "set" command comes from wenv from grubutils. My grub4dos does not have "insmod" but it has "module". When I try "module /wenv" it complains http://reboot.pro/topic/19129-grub4dos-set-command-is-unknown/ "error 20: Multiboot kernel must be loaded before modlues". I can not find any information on the multiboot kernel. I have also tried compliling the latest from git but after hitting the 3rd .configure error, I gave up. Can someone give me some advice on the most straght forward route to gettting a recent version of grub4dos that I can laod from grub2 that has all the modern features enbaled? Thanks, --BobG Back to top #2 steve6375 steve6375 Platinum Member Developer 6229 posts Location:UK Interests:computers, programming (masm,vb6,C,vbs), photography,TV,films,guitars United Kingdom Posted 05 November 2013 - 09:40 PM Use RMPrepUSB to install grub4dos - it has a very recent version. chenall is maintaining the latest versions -https://code.google..../downloads/list Back to top #3 bobjunga bobjunga Newbie Members 11 posts United States Posted 05 November 2013 - 11:42 PM I don't have a windows machine at the moment. I use linux. I think that rmprepusb is only an exe runs in windows and creates a bootable usb stick. Is that true? Is there a way to extract the latest grub4dos from the rmprepusb download in linux? Update: I see that the link you provided was not to rmprepusb downloads but to grub4dos downloads. Thanks. I am trying it now. --BobG Edited by bobjunga, 06 November 2013 - 12:07 AM. Back to top #4 bobjunga bobjunga Newbi
Common F23 Bugs Common F24 Bugs Communicate with Fedora The Documents Bug Reports Fedora Update System (Bodhi) Fedora Build System (Koji) Official Spins FedoraForum.org > Fedora 23/24 > Using Fedora Error 27: unrecognised http://forums.fedoraforum.org/showthread.php?t=217059 command FedoraForum Search User Name Remember Me? Password Forgot Password? Join Us! http://forum.porteus.org/viewtopic.php?t=1899&p=12841 Register All Albums FAQ Today's Posts Search Using Fedora General support for current versions. Ask questions about Fedora that do not belong in any other forum. Google™ Search FedoraForum Search Red Hat Bugzilla Search Search Forums Show Threads Show Posts Tag Search Advanced Search Go to Page... Thread Tools Search this Thread Display error 27 Modes #1 16th March 2009, 05:49 PM wizza Offline Registered User Join Date: Mar 2009 Posts: 14 Error 27: unrecognized command Hi peeps, I have just come across the above error code when trying to boot into vista. Up until now it has always worked. cant think of anything i have done to make it do this (its got to be me though right?) Has anyone got error 27 unrecognized any ideas PLEASE!! cheers Mark Last edited by wizza; 16th March 2009 at 06:04 PM. wizza View Public Profile Find all posts by wizza #2 16th March 2009, 06:02 PM wizza Offline Registered User Join Date: Mar 2009 Posts: 14 just did a quick test just now. if i change the boot order in the bios for my 'c' drive (sata) to go first vista boots. (fedora is on ide slave) (still getting the problem booting from grub though) Last edited by wizza; 16th March 2009 at 06:07 PM. wizza View Public Profile Find all posts by wizza #3 16th March 2009, 06:06 PM vwbond Offline Registered User Join Date: Mar 2009 Posts: 22 Good job, man. __________________ We close Windows to keep virus out. CentOS 6 (Gnome) running on an old Dell D630 T7250 2Ghz CPU, 3GB DDR MB, Dual booting Win 7 64bit with CentOS 6. Reason for moving to Linux: In Jan 07 Windows Vista was released to the public (in beta form) and the time spent with BSOD errors and system freezes was over the top. Windows finally drove me to find an OS that had more stability. vwbond View Public Profile Find all posts by vwbon
for some help. Post a reply 4 posts • Page 1 of 1 Reply with quote Porteus 2.0 and Grub4DOS [SOLVED] by Ed_P » 06 Feb 2013, 23:57 Hi.I'm running Grub4DOS 0.4.5c 2012-06-19 and I use it on my USB Flash drive to boot several ISOs including Porteus 1.2. I'm trying to add the Porteus-v2.0-rc2-i486.iso to the drive and am encountering an error when it boots. It stops when it can't find porteus-v2.0-i486.sgn.These are the two menu items that I'm using:Code: Select alltitle Linux\n 257MB\n Porteus-v1.2-i486.iso
map --heads=0 --sectors-per-track=0 /ISOs/Porteus-v1.2-i486.iso (0xff)
map --hook
root (0xff)
kernel /boot/vmlinuz from_iso=/ISOs/Porteus-v1.2-i486.iso autoexec=startx
initrd /boot/initrd.xz
title Linux test\n 242MB\n Porteus-v2.0-rc2-i486.iso
map --heads=0 --sectors-per-track=0 /ISOs/Porteus-v2.0-rc2-i486.iso (0xff)
map --hook
root (0xff)
kernel /boot/syslinux/vmlinuz from_iso=/ISOs/Porteus-v2.0-rc2-i486.iso
initrd /boot/syslinux/initrd.xzI removed the cheatcode as suggested in another thread but when I tried the "find" command mentioned in the other thread it returned an invalid command response.Code: Select allgrub> find /ISOs/Porteus-v2.0-rc2-i486.iso -type f
Error 27: Unrecognized commandls /ISOs/ however does show the v2.0 iso amongst the others. Do I need a different version of Grub4DOS or a different cheatcode? tiaEd Last edited by Ed_P on 07 Feb 2013, 07:07, edited 1 time in total. Ed Ed_P Contributor Posts: 2221Joined: 06 Feb 2013, 23:12Location: Western NY, USA Distribution: RazorQT 3.0.1 64-bit ISO Top Reply with quote Re: Porteus 2.0 and Grub4DOS by brokenman » 07 Feb 2013, 01:35 Please also try following the advice given by fanthom in the following thread. Pay attention to extracting vmlinu