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Top Forums UNIX for Dummies Questions & Answers Right place to install Linux bootloader Post 302867747 by freedombird9 on Friday 25th of October 2013 01:35:00 AM
Old 10-25-2013
Right place to install Linux bootloader

I installed ubuntu on a windows machine, but after restart the computer automatically booted windows without showing me boot option. I think I might have installed my ubuntu bootloader in the wrong partition. I previously have sda1,2,3,5 and 6. I partitioned sda6 into sda6, sda7 and sda8. I mounted / on sda6, swap on sda7, /home on sda8. When choosing where to install bootloader on the bottom, I selected sda6, instead of sda, where my windows bootloader is. I wonder if I should choose that disk? And now how can I repair it? I used a usb to install it. I can lunch ubuntu directly from my usb, so I tried grub-install /dev/sda on the usb lunched version but it displays: cp: cannot create regular file `/boot/grub/915resolution.mod': Permission denied. Don't know what to do.
Btw, in which disk is my ubuntu kernel installed? thanks a lot.
 

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installgrub(1M)                                                                                                                    installgrub(1M)

NAME
installgrub - install GRUB in a disk partition or a floppy SYNOPSIS
/sbin/installgrub [-fm] stage1 stage2 raw-device The installgrub command is an -only program. GRUB stands for GRand Unified Bootloader. installgrub installs GRUB stage 1 and stage 2 files on the boot area of a disk partition. If you specify the -m option, installgrub installs the stage 1 file on the master boot sector of the disk. The installgrub command accepts the following options: -f Suppresses interaction when overwriting the master boot sector. -m Installs GRUB stage1 on the master boot sector interactively. The installgrub command accepts the following operands: stage1 The name of the GRUB stage 1 file. stage2 The name of the GRUB stage 2 file. raw-device The name of the device onto which GRUB code is to be installed. It must be a character device that is readable and writable. For disk devices, specify the slice where the GRUB menu file is located. (For Solaris it is the root slice.) For a floppy disk, it is /dev/rdiskette. Example 1: Installing GRUB on a Hard Disk Slice The following command installs GRUB on a system where the root slice is c0d0s0: example# /sbin/installgrub /boot/grub/stage1 /boot/grub/stage2 /dev/rdsk/c0d0s0 Example 2: Installing GRUB on a Floppy The following command installs GRUB on a formatted floppy: example# mount -F pcfs /dev/diskette /mnt # mkdir -p /mnt/boot/grub # cp /boot/grub/* /mnt/boot/grub # umount /mnt # cd /boot/grub # /sbin/installgrub stage1 stage2 /dev/rdiskette /boot/grub Directory where GRUB files reside. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ boot(1M), fdisk(1M), fmthard(1M), kernel(1M), attributes(5) Installing GRUB on the master boot sector (-m option) overrides any boot manager currently installed on the machine. The system will always boot the GRUB in the Solaris partition regardless of which fdisk partition is active. 24 May 2005 installgrub(1M)
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