Re: Always falling to grub prompt
Victor Munoz(vmunoz@macul.ciencias.uchile.cl) is reported to have said:
> Hello. It's been about a week that I've been unable to boot normally.
> Every time I get the grub prompt, and then I have to go through the
> sequence of commands "root/kernel/initrd/boot". I understand that this
> may occur due to some defective file, but I can't see anything
> abnormal in menu.lst, device.map, or fstab.
>
> This is a dual boot box, Windows in /dev/hdc [(hd0,0) for grub], Sid
> in /dev/hdd [(hd1,0)]. I have several kernels installed: 2.6.18-4-686,
> 2.6.21-2-686, 2.6.22-1-686, 2.6.22-2-686. 21-2 and 22-1 can't
> boot, saying something about BIOS being unable to handle the number of
> cylinders. I don't know if this suggests something's wrong with my
> system, but 18 and 22-2 boot just fine (except for the fact that I
> always get the grub prompt), and the boot process was
> normal until a couple of weeks ago.
>
> Any help will be appreciated. I have included below the files
> menu.lst, devide.map, fstab, in case someone is interested. Regards,
>
> Victor
It's late and I'm tired but something looks wrong to me.
Do you have 4 hard drives or is this one (1) HD with
You say /dev/hdd [(hd1,0)]
But to me /dev/hda -> (hd0,0)
/hdb -> (hd1,0)
/hdc -> (hd2,0)
/hdd -> (hd3,0)
but you have
title Debian GNU/Linux, kernel 2.6.21-2-amd64 Default
root (hd0,4) -------------<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
kernel /boot/vmlinuz root=/dev/sda5 ro vga=0x31a
initrd /boot/initrd.img
savedefault
so you say that root is on hda1 partition 3
And the kernel is on root=/dev/sda5
I'm confused. How many HD's do you have, 1 or 2 or ?
I don't get this either
> # kopt=root=/dev/hdd1 ro
If it really is on hd1 partition d, that should be hda4 not hdd1.
I hope I'm wrong but I think you are confusing grub as much as me.
Wayne
>
> ----menu.lst------------------------------------------------
>
> # menu.lst - See: grub(8), info grub, update-grub(8)
> # grub-install(8), grub-floppy(8),
> # grub-md5-crypt, /usr/share/doc/grub
> # and /usr/share/doc/grub-doc/.
>
> ## default num
> # Set the default entry to the entry number NUM. Numbering starts from 0, and
> # the entry number 0 is the default if the command is not used.
> #
> # You can specify 'saved' instead of a number. In this case, the default entry
> # is the entry saved with the command 'savedefault'.
> # WARNING: If you are using dmraid do not change this entry to 'saved' or your
> # array will desync and will not let you boot your system.
> default 0
>
> ## timeout sec
> # Set a timeout, in SEC seconds, before automatically booting the default entry
> # (normally the first entry defined).
> timeout 5
>
> # Pretty colours
> color cyan/blue white/blue
>
> ## password ['--md5'] passwd
> # If used in the first section of a menu file, disable all interactive editing
> # control (menu entry editor and command-line) and entries protected by the
> # command 'lock'
> # e.g. password topsecret
> # password --md5 $1$gLhU0/$aW78kHK1QfV3P2b2znUoe/
> # password topsecret
>
> #
> # examples
> #
> # title Windows 95/98/NT/2000
> # root (hd0,0)
> # makeactive
> # chainloader +1
> #
> # title Linux
> # root (hd0,1)
> # kernel /vmlinuz root=/dev/hda2 ro
> #
>
> #
> # Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST
>
> ### BEGIN AUTOMAGIC KERNELS LIST
> ## lines between the AUTOMAGIC KERNELS LIST markers will be modified
> ## by the debian update-grub script except for the default options below
>
> ## DO NOT UNCOMMENT THEM, Just edit them to your needs
>
> ## ## Start Default Options ##
> ## default kernel options
> ## default kernel options for automagic boot options
> ## If you want special options for specific kernels use kopt_x_y_z
> ## where x.y.z is kernel version. Minor versions can be omitted.
> ## e.g. kopt=root=/dev/hda1 ro
> ## kopt_2_6_8=root=/dev/hdc1 ro
> ## kopt_2_6_8_2_686=root=/dev/hdc2 ro
> # kopt=root=/dev/hdd1 ro
>
> ## default grub root device
> ## e.g. groot=(hd0,0)
> # groot=(hd1,0)
>
> ## should update-grub create alternative automagic boot options
> ## e.g. alternative=true
> ## alternative=false
> # alternative=true
>
> ## should update-grub lock alternative automagic boot options
> ## e.g. lockalternative=true
> ## lockalternative=false
> # lockalternative=false
>
> ## additional options to use with the default boot option, but not with the
> ## alternatives
> ## e.g. defoptions=vga=791 resume=/dev/hda5
> # defoptions=
>
> ## should update-grub lock old automagic boot options
> ## e.g. lockold=false
> ## lockold=true
> # lockold=false
>
> ## Xen hypervisor options to use with the default Xen boot option
> # xenhopt=
>
> ## Xen Linux kernel options to use with the default Xen boot option
> # xenkopt=console=tty0
>
> ## altoption boot targets option
> ## multiple altoptions lines are allowed
> ## e.g. altoptions=(extra menu suffix) extra boot options
> ## altoptions=(single-user) single
> # altoptions=(single-user mode) single
>
> ## controls how many kernels should be put into the menu.lst
> ## only counts the first occurence of a kernel, not the
> ## alternative kernel options
> ## e.g. howmany=all
> ## howmany=7
> # howmany=all
>
> ## should update-grub create memtest86 boot option
> ## e.g. memtest86=true
> ## memtest86=false
> # memtest86=true
>
> ## should update-grub adjust the value of the default booted system
> ## can be true or false
> # updatedefaultentry=false
>
> ## ## End Default Options ##
>
> title Debian GNU/Linux, kernel 2.6.22-2-686
> root (hd1,0)
> kernel /boot/vmlinuz-2.6.22-2-686 root=/dev/hdd1 ro
> initrd /boot/initrd.img-2.6.22-2-686
> savedefault
>
> title Debian GNU/Linux, kernel 2.6.22-2-686 (single-user mode)
> root (hd1,0)
> kernel /boot/vmlinuz-2.6.22-2-686 root=/dev/hdd1 ro single
> initrd /boot/initrd.img-2.6.22-2-686
> savedefault
>
> title Debian GNU/Linux, kernel 2.6.22-1-686
> root (hd1,0)
> kernel /boot/vmlinuz-2.6.22-1-686 root=/dev/hdd1 ro
> initrd /boot/initrd.img-2.6.22-1-686
> savedefault
>
> title Debian GNU/Linux, kernel 2.6.22-1-686 (single-user mode)
> root (hd1,0)
> kernel /boot/vmlinuz-2.6.22-1-686 root=/dev/hdd1 ro single
> initrd /boot/initrd.img-2.6.22-1-686
> savedefault
>
> title Debian GNU/Linux, kernel 2.6.21-2-686
> root (hd1,0)
> kernel /boot/vmlinuz-2.6.21-2-686 root=/dev/hdd1 ro
> initrd /boot/initrd.img-2.6.21-2-686
> savedefault
>
> title Debian GNU/Linux, kernel 2.6.21-2-686 (single-user mode)
> root (hd1,0)
> kernel /boot/vmlinuz-2.6.21-2-686 root=/dev/hdd1 ro single
> initrd /boot/initrd.img-2.6.21-2-686
> savedefault
>
> title Debian GNU/Linux, kernel 2.6.18-4-686
> root (hd1,0)
> kernel /boot/vmlinuz-2.6.18-4-686 root=/dev/hdd1 ro
> initrd /boot/initrd.img-2.6.18-4-686
> savedefault
>
> title Debian GNU/Linux, kernel 2.6.18-4-686 (single-user mode)
> root (hd1,0)
> kernel /boot/vmlinuz-2.6.18-4-686 root=/dev/hdd1 ro single
> initrd /boot/initrd.img-2.6.18-4-686
> savedefault
>
> ### END DEBIAN AUTOMAGIC KERNELS LIST
>
> # This is a divider, added to separate the menu items below from the Debian
> # ones.
> title Other operating systems:
> root
>
>
> # This entry automatically added by the Debian installer for a non-linux OS
> # on /dev/hdc1
> title Microsoft Windows XP Professional
> root (hd0,0)
> #savedefault
> makeactive
> chainloader +1
>
> -----device.map----------------------------------------------------
>
> (hd0) /dev/hdc
> (hd1) /dev/hdd
>
> -----fstab---------------------------------------------------------
>
> # /etc/fstab: static file system information.
> #
> # <file system> <mount point> <type> <options> <dump> <pass>
> proc /proc proc defaults 0 0
> /dev/hdd1 / ext3 defaults,errors=remount-ro 0 1
> /dev/hdd2 none swap sw 0 0
> /dev/hda /media/cdrom0 udf,iso9660 user,noauto 0 0
> /dev/fd0 /media/floppy0 auto rw,user,noauto 0 0
>
> -------------------------------------------------------------------
>
>
>
>
> --
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--
Real programmers don't comment their code. It was hard to write, it
should be hard to understand.
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