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mathias_redd
n00b
Joined: 20 Jun 2014
Posts: 18
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 Posted: Sat Jun 28, 2014 5:49 am Post subject: Can't Write Config File for Grub Legacy (read-only fs) |
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I am trying to write my grub.conf file to dual boot with Windows 2008 and Gentoo Linux:
| Code: | # This is a sample grub.conf for use with Genkernel, per the Gentoo handbook
# http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=1&chap=10#doc_chap2
# If you are not using Genkernel and you need help creating this file, you
# should consult the handbook. Alternatively, consult the grub.conf.sample that
# is included with the Grub documentation.
default 0
timeout 5
splashimage=(hd2,1)/boot/grub/splash.xpm.gz
title Windows Server 2008
rootnoverify (hd0,0)
makeactive
chainloader +1
title Gentoo Linux 3.14.4-ck
root (hd2,3)
kernel /boot/kernel-genkernel-x86_64-3.14.4-ck real_root=/dev/sdc4
initrd /boot/initramfs-genkernel-x86_64-3.14.4-ck |
When I go to save it, nano tells me that it can't because it is a read-only file system (my boot and root partitions are both ext4). I have never had any trouble editing config files before.
I tried to navigate to /boot/grub/grub.conf with the GUI file manager, and I can edit it there; however it doesn't show up in my chrooted command line. It shows up just fine in a brand new command line.
Can anyone help me with this issue?
Also, for loading Windows 2008, should I point Grub to the 350mb boot partition or the partition that I installed Windows to?
| Code: | # /etc/fstab: static file system information.
#
# noatime turns off atimes for increased performance (atimes normally aren't
# needed); notail increases performance of ReiserFS (at the expense of storage
# efficiency). It's safe to drop the noatime options if you want and to
# switch between notail / tail freely.
#
# The root filesystem should have a pass number of either 0 or 1.
# All other filesystems should have a pass number of 0 or greater than 1.
#
# See the manpage fstab(5) for more information.
#
# <fs> <mountpoint> <type> <opts> <dump/pass>
# NOTE: If your BOOT partition is ReiserFS, add the notail option to opts.
/dev/sda1 /mnt/Windows ntfs auto,rw 0 1
/dev/sda5 /mnt/Audio ntfs auto,rw 0 0
/dev/sda3 /mnt/Video ntfs auto,rw 0 0
/dev/sdb2 /mnt/Games ntfs auto,rw 0 0
/dev/sdb1 /mnt/WareZ ntfs auto,rw 0 0
/dev/sdc2 /boot ext4 noauto,noatime 0 2
/dev/sdc3 none swap sw 0 0
/dev/sdc4 / ext4 noatime 0 1
/dev/cdrom /mnt/cdrom auto noauto,user 0 0 |
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cwr
Veteran
Joined: 17 Dec 2005
Posts: 1969
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| Posted: Sat Jun 28, 2014 2:58 pm Post subject: |
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It sounds as if you might be booting from a CD, and are trying to edit the /boot directory
on the CD. Read-only filesystems otherwise can usually be cleared by running fsck.
I'd be inclined to boot through Windows to Grub; that way you avoid messing with (and
possibly messing up) Windows' MBR layout, though it adds 10 sec or so to the boot time.
Windows can be a bit neurotic about partitions, especially on laptops.
Will |
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russK
l33t
Joined: 27 Jun 2006
Posts: 665
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| Posted: Sat Jun 28, 2014 3:23 pm Post subject: |
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did you try a remount ?
Something like this
| Code: | | mount -o remount,rw /dev/sdc2 /boot |
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mathias_redd
n00b
Joined: 20 Jun 2014
Posts: 18
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| Posted: Sat Jun 28, 2014 5:21 pm Post subject: |
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Thank you very much. I unmounted my Gentoo boot partition:
,
ran fsck:
and remounted the partition:
| Code: | | (chroot) sysresccd / # mount /boot |
OR
| Code: | | root@sysresccd /root % mount /dev/sdc2 /mnt/gentoo/boot |
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