Changing hard drive number in Grub


Recommended Posts

I have an SSD and a normal HDD in my system

SSD was in the laptop and HDD was in a caddy in the optical bay

when SSD was in everything worked fine

when i then add the HDD in the optical bay i get a boot loop when trying to load grub like the laptop is trying to boot from the optical bay first, this is disabled in bios

If i switch the SSD into the optical bay and HDD into laptop it all works fine

Below is my grub2.cfg

I have tried chaning all the hd0 to hd1 but this makes no difference

here is my grub2.cfg


#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub2-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
load_env
fi
set default="0"
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
else
menuentry_id_option=""
fi
export menuentry_id_option
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}
function load_video {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
}
if [ x$feature_default_font_path = xy ] ; then
font=unicode
else
insmod part_msdos
insmod ext2
set root='hd0,msdos2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos2 --hint-efi=hd0,msdos2 --hint-baremetal=ahci0,msdos2 --hint='hd0,msdos2' e5b30aa2-a4b6-41a3-9e0a-6688252d36ee
else
search --no-floppy --fs-uuid --set=root e5b30aa2-a4b6-41a3-9e0a-6688252d36ee
fi
font="/usr/share/grub/unicode.pf2"
fi
if loadfont $font ; then
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=en_GB
insmod gettext
fi
terminal_output gfxterm
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint='hd0,msdos1' 8351a5aa-4bfd-4c45-872c-2ae6dc431e37
else
search --no-floppy --fs-uuid --set=root 8351a5aa-4bfd-4c45-872c-2ae6dc431e37
fi
insmod gfxmenu
loadfont ($root)/grub2/themes/system/DejaVuSans-10.pf2
loadfont ($root)/grub2/themes/system/DejaVuSans-12.pf2
loadfont ($root)/grub2/themes/system/DejaVuSans-Bold-14.pf2
loadfont ($root)/grub2/fonts/unicode.pf2
insmod png
set theme=($root)/grub2/themes/system/theme.txt
export theme
set timeout=5
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Fedora (3.7.5-201.fc18.x86_64)' --class fedora --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-e5b30aa2-a4b6-41a3-9e0a-6688252d36ee' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint='hd0,msdos1' 8351a5aa-4bfd-4c45-872c-2ae6dc431e37
else
search --no-floppy --fs-uuid --set=root 8351a5aa-4bfd-4c45-872c-2ae6dc431e37
fi
echo 'Loading Fedora (3.7.5-201.fc18.x86_64)'
linux /vmlinuz-3.7.5-201.fc18.x86_64 root=UUID=e5b30aa2-a4b6-41a3-9e0a-6688252d36ee ro rd.md=0 rd.lvm=0 rd.dm=0 rd.luks=0 vconsole.keymap=uk rhgb quiet LANG=en_GB.UTF-8
echo 'Loading initial ramdisk ...'
initrd /initramfs-3.7.5-201.fc18.x86_64.img
}
menuentry 'Fedora (3.7.4-204.fc18.x86_64)' --class fedora --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-e5b30aa2-a4b6-41a3-9e0a-6688252d36ee' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint='hd0,msdos1' 8351a5aa-4bfd-4c45-872c-2ae6dc431e37
else
search --no-floppy --fs-uuid --set=root 8351a5aa-4bfd-4c45-872c-2ae6dc431e37
fi
echo 'Loading Fedora (3.7.4-204.fc18.x86_64)'
linux /vmlinuz-3.7.4-204.fc18.x86_64 root=UUID=e5b30aa2-a4b6-41a3-9e0a-6688252d36ee ro rd.md=0 rd.lvm=0 rd.dm=0 rd.luks=0 vconsole.keymap=uk rhgb quiet LANG=en_GB.UTF-8
echo 'Loading initial ramdisk ...'
initrd /initramfs-3.7.4-204.fc18.x86_64.img
}
menuentry 'Fedora' --class fedora --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-e5b30aa2-a4b6-41a3-9e0a-6688252d36ee' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint='hd0,msdos1' 8351a5aa-4bfd-4c45-872c-2ae6dc431e37
else
search --no-floppy --fs-uuid --set=root 8351a5aa-4bfd-4c45-872c-2ae6dc431e37
fi
echo 'Loading Linux 3.6.10-4.fc18.x86_64 ...'
linux /vmlinuz-3.6.10-4.fc18.x86_64 root=UUID=e5b30aa2-a4b6-41a3-9e0a-6688252d36ee ro rd.md=0 rd.lvm=0 rd.dm=0 rd.luks=0 vconsole.keymap=uk rhgb quiet
echo 'Loading initial ramdisk ...'
initrd /initramfs-3.6.10-4.fc18.x86_64.img
}
submenu 'Advanced options for Fedora' $menuentry_id_option 'gnulinux-advanced-e5b30aa2-a4b6-41a3-9e0a-6688252d36ee' {
menuentry 'Fedora, with Linux 3.6.10-4.fc18.x86_64' --class fedora --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.6.10-4.fc18.x86_64-advanced-e5b30aa2-a4b6-41a3-9e0a-6688252d36ee' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint='hd0,msdos1' 8351a5aa-4bfd-4c45-872c-2ae6dc431e37
else
search --no-floppy --fs-uuid --set=root 8351a5aa-4bfd-4c45-872c-2ae6dc431e37
fi
echo 'Loading Linux 3.6.10-4.fc18.x86_64 ...'
linux /vmlinuz-3.6.10-4.fc18.x86_64 root=UUID=e5b30aa2-a4b6-41a3-9e0a-6688252d36ee ro rd.md=0 rd.lvm=0 rd.dm=0 rd.luks=0 vconsole.keymap=uk rhgb quiet
echo 'Loading initial ramdisk ...'
initrd /initramfs-3.6.10-4.fc18.x86_64.img
}
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/20_ppc_terminfo ###
### END /etc/grub.d/20_ppc_terminfo ###
### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f ${config_directory}/custom.cfg ]; then
source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
[/CODE]

and here is my fstab

[CODE]
#
# /etc/fstab
# Created by anaconda on Sat Jan 26 19:50:30 2013
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
UUID=e5b30aa2-a4b6-41a3-9e0a-6688252d36ee / ext4 defaults,discard,noatime,nodiratime 1 1
UUID=8351a5aa-4bfd-4c45-872c-2ae6dc431e37 /boot ext4 defaults,discard,noatime,nodiratime 1 2
UUID=5757507b-3c10-4495-89f9-a2b1eeaccaea /home ext4 defaults,discard,noatime,nodiratime 1 2
UUID=1794135c-6075-4f17-b3bb-2b6635fd6380 swap swap defaults,discard,noatime,nodiratime 0 0
none /tmp tmpfs defaults 0 0
/dev/sda1 /home/haggis/Storage ext4 defaults 0 0
[/CODE]

any ideas?

Link to comment
https://www.neowin.net/forum/topic/1135552-changing-hard-drive-number-in-grub/
Share on other sites

I might be being a complete idiots here

if i switch the drives around does SDA become SDB and vice versa?

Edit: that should not make any difference really should it?

Repitition?? u mean the different kernel entries?

and MSODS not sure when i did grub install it added it in there i have never touched it as grub is not something i am used to

Hi Haggis,

Sorry for the short replies I was stuck replying on my Andriod phone.

Repitition?? u mean the different kernel entries?

Exactly, why do you have all the initramfs's from different versions? You would only run into compatibility issues trying to boot from an older img. It is not urgent by any means just - extra data stored for no reason.

and MSODS not sure when i did grub install it added it in there i have never touched it as grub is not something i am used to

It is odd that both are set for root level. -- Why? I have always built my own and I am not sure what the advantage would be in your scenario.

This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Posts

    • The fact that memory in general is so high I have to take a loan out to build a computer now is just beyond stupid. Who's really to blame here? Low supply or high demand?
    • Display Driver Uninstaller (DDU) 18.1.5.5 by Razvan Serea Display Driver Uninstaller (DDU) is a utility for completely removing AMD/NVIDIA/INTEL graphics drivers and related packages from your system, attempting to eliminate all leftovers (including registry entries, folders and files, driver store). Though AMD/NVIDIA/INTEL drivers can usually be removed via the Windows Control Panel, this uninstaller tool was created for situations where standard uninstall fails, or when you need to fully remove NVIDIA or ATI graphics card drivers. After using this driver cleaner, your system will behave as though it’s the first time you’re installing a new driver—similar to a fresh Windows installation. As with all such tools, we recommend creating a restore point beforehand, allowing you to undo changes if issues arise. If you're having trouble installing an older or newer driver, try it—there are reports that it resolves such problems. Recommended usage: The tool can be used in Normal mode but for absolute stability when using DDU, Safemode is always the best. Make a backup or a system restore (but it should normally be pretty safe). It is best to exclude the DDU folder completely from any security software to avoid issues. You do NOT need to uninstall the driver prior using DDU. Requirements: .NET Framework 4.8 Compatible with Windows 7, 8, 8.1, 10, and 11 (32-bit or 64-bit) Note: Using on Insider Preview builds is at your own risk. Display Driver Uninstaller (DDU) 18.1.5.5 changelog: Added 'Reset to recommended' button for the Options. General fixes and improvements. Download: Display Driver Uninstaller (DDU) 18.1.5.5 | 1.7 MB (Freeware) Download: DDU Portable | 1.2 MB Links: Display Driver Uninstaller Home Page | Screenshot Get alerted to all of our Software updates on Twitter at @NeowinSoftware
    • WACUP 1.99.51.24568 Preview by Razvan Serea WACUP (WinAmp Community Update Project) is a modern, enhanced version of the classic Winamp music player, designed for better stability, performance, and compatibility. Built for Windows, WACUP retains the familiar Winamp interface while adding 64-bit support, bug fixes, and new features like improved audio format support, customizable skins, and optimized playlist management. Unlike bloated alternatives, WACUP focuses on lightweight performance and regular updates, making it the best choice for fans of the classic Winamp experience. Basically, if you miss the good old days of Winamp and want a modern upgrade that doesn’t mess things up, WACUP is for you! WACUP key features: Classic Winamp Feel – Keeps the familiar interface and functionality. Bug Fixes & Stability – Fixes old Winamp issues and improves performance. 64-Bit Support – Works better on modern systems. More Formats & Plugins – Supports additional audio formats and third-party plugins. Customizable UI – Skins and tweaks for a personalized look. Better Library Management – Improved playlists, media organization, and search. No Bloat – Focuses on performance without unnecessary extras. Regular Updates – Community-driven development with new features and fixes. WACUP 1.99.51.24568 Preview changelog: Fixed a deadlock seen from the recent crash reports when doing some of the drag + drop actions within the media library window Fixed a loading crash seen related to a problem with some of the artwork cache image files being restored which should now be better handled allowing for the bad image to be removed without it failing Fixed a deadlock seen from the recent crash reports when the internal metadata cache clearing is triggered which could block the main ui thread for too long with this now being moved to a background thread Fixed some performance issues with some of the methods related to determining artwork support which mainly affected the local library import / refresh (this is still slower for some compared to other players because there's more data & artwork aspects being checked for which means doing more processing on a single file despite the best of attempts to reduce duplicate / heavy processing where possible) Fixed a crash with the JTFE based missing files hotkey which no one seems to have used for an age for this to appear (maybe it's time to seriously consider stripping out features that aren't being used) Fixed how some of the file types which use extra information to reference their sub-songs is handled which was preventing some from being correctly resolved back to their base file (noticed fixing above) Fixed an issue with the handling of files with underscores in their filepath which wasn't being correctly handled causing some of the filename to be lost when shown as the title if title reading is delayed Fixed a few things that might be behind NotSoDirect not being stable for some setups though am still not certain that the changes done for this are going to fully resolve the problem from the crash reports Fixed the OS toast handling when there's no prior shortcut in the OS start menu to now create the shortcut (needed to allow the yes/no buttons for the new build / post-release toast) to be done as a hidden one so it's less likely to cause annoyance for those not wanting to see it whilst still allowing this less than ideal OS api implementation requirement to be met to avoid toasts without the needed buttons Fixed a regression when moving from taglib1 to taglib2 which broke some of the handling in place to allow for external programs to still access files when wacup has a held open cached instance of the file Everything else Updated cppwinrt (gen_win10shell.dll) to 3.0.260520.1 (26 May 2026) Updated libcurl (libcurl.dll) to 8.2.1 (24 Jun 2026) Updated Monkey's Audio (in_ape.dll) to 13.15 (28 Jun 2026) Updated mpg123 (mpg123.dll) to 1.33.6 (6 Jun 2026) Updated OpenSSL (libcurl.dll) to 3.5.7 (9 Jun 2026) Updated pugixml to 1.16 (16 Jun 2026) Updated taglib (tag2.dll) to 2.3.0 (11 May 2026) Updated vgmstream (in_vgmstream.dll) to the latest Git commit from 28 Jun 2026 Download: WACUP 64-bit | 9.6 MB (Freeware) Download: WACUP 32-bit View: WACUP Website | Screenshots Get alerted to all of our Software updates on Twitter at @NeowinSoftware
    • "over a thousand engineering hours" and started selling it but could not take a couple of minuets to send an AI email to ask permission. What an expensive lesson.
    • just tested it yesterday, a simple page with autoloading ADS takes 60mb....just 1 page for 60 megabytes.   poor people with a limited internet never will visit neolose
  • Recent Achievements

    • Week One Done
      Collagen Project earned a badge
      Week One Done
    • Reacting Well
      Wakeen1966 earned a badge
      Reacting Well
    • Rookie
      Almohandis went up a rank
      Rookie
    • Apprentice
      jahara21 went up a rank
      Apprentice
    • Reacting Well
      NovaEdgeX earned a badge
      Reacting Well
  • Popular Contributors

    1. 1
      +primortal
      526
    2. 2
      +Edouard
      265
    3. 3
      PsYcHoKiLLa
      146
    4. 4
      Steven P.
      99
    5. 5
      macoman
      55
  • Tell a friend

    Love Neowin? Tell a friend!