Insmod error in grub: symbol not found:grub

Insmod error in grub: symbol not found:grub_realidt

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I have a dual boot PC with Windows 7 and Ubuntu. I upgraded from 12.04 to 12.10 and then to 13.04 and since then I have not been able to boot because the PC goes into grub rescue with the error "File not found".

I have tried the following steps:

set prefix=(hd0,msdos5)/usr/lib/grub/i386-pc

set root=(hd0,msdos5)

insmod linux

I get error:

symbol not found : 'grub_realidt'.

if I do insmod normal, I get error

symbol not found : 'grub_disk_dev_list'

I have two partitions containing linux file system: (hd0,msdos5) and (hd0,msdos6). They were mountpoints for / and /boot respectively.

I have searched for this error, and found some "solved" threads. But all of them are using Live USB to get in grub prompt. I don't have access to one, and was hoping to be able to solve the issue without a flash drive.

Please help...
Thanks in advance.

asked Apr 24 '13 at 10:07

stranger_anon

1521517

bumped to the homepage by Community♦ 2 days ago

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

what is shown when you do ls (hd0,msdos5)/ and ls (hd0,msdos6)/?
– Rinzwind
Apr 24 '13 at 10:33

ls (hd0,msdos5)/ shows /boot /home vmlinuz initrd.img ls (hd0,msdos6)/ shows /grub lost+found and many generic image files
– stranger_anon
Apr 24 '13 at 10:48

add a comment |

up vote
6
down vote

favorite

I have tried the following steps:

set prefix=(hd0,msdos5)/usr/lib/grub/i386-pc

set root=(hd0,msdos5)

insmod linux

I get error:

symbol not found : 'grub_realidt'.

if I do insmod normal, I get error

symbol not found : 'grub_disk_dev_list'

I have two partitions containing linux file system: (hd0,msdos5) and (hd0,msdos6). They were mountpoints for / and /boot respectively.

Please help...
Thanks in advance.

asked Apr 24 '13 at 10:07

stranger_anon

1521517

bumped to the homepage by Community♦ 2 days ago

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

what is shown when you do ls (hd0,msdos5)/ and ls (hd0,msdos6)/?
– Rinzwind
Apr 24 '13 at 10:33

ls (hd0,msdos5)/ shows /boot /home vmlinuz initrd.img ls (hd0,msdos6)/ shows /grub lost+found and many generic image files
– stranger_anon
Apr 24 '13 at 10:48

add a comment |

up vote
6
down vote

favorite

I have tried the following steps:

set prefix=(hd0,msdos5)/usr/lib/grub/i386-pc

set root=(hd0,msdos5)

insmod linux

I get error:

symbol not found : 'grub_realidt'.

if I do insmod normal, I get error

symbol not found : 'grub_disk_dev_list'

I have two partitions containing linux file system: (hd0,msdos5) and (hd0,msdos6). They were mountpoints for / and /boot respectively.

Please help...
Thanks in advance.

asked Apr 24 '13 at 10:07

stranger_anon

1521517

I have tried the following steps:

set prefix=(hd0,msdos5)/usr/lib/grub/i386-pc

set root=(hd0,msdos5)

insmod linux

I get error:

symbol not found : 'grub_realidt'.

if I do insmod normal, I get error

symbol not found : 'grub_disk_dev_list'

I have two partitions containing linux file system: (hd0,msdos5) and (hd0,msdos6). They were mountpoints for / and /boot respectively.

Please help...
Thanks in advance.

boot grub2 dual-boot grubrescue

asked Apr 24 '13 at 10:07

stranger_anon

1521517

asked Apr 24 '13 at 10:07

stranger_anon

1521517

asked Apr 24 '13 at 10:07

stranger_anon

1521517

asked Apr 24 '13 at 10:07

stranger_anon

1521517

asked Apr 24 '13 at 10:07

stranger_anon

1521517

bumped to the homepage by Community♦ 2 days ago

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

bumped to the homepage by Community♦ 2 days ago

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

what is shown when you do ls (hd0,msdos5)/ and ls (hd0,msdos6)/?
– Rinzwind
Apr 24 '13 at 10:33

ls (hd0,msdos5)/ shows /boot /home vmlinuz initrd.img ls (hd0,msdos6)/ shows /grub lost+found and many generic image files
– stranger_anon
Apr 24 '13 at 10:48

add a comment |

what is shown when you do ls (hd0,msdos5)/ and ls (hd0,msdos6)/?
– Rinzwind
Apr 24 '13 at 10:33

ls (hd0,msdos5)/ shows /boot /home vmlinuz initrd.img ls (hd0,msdos6)/ shows /grub lost+found and many generic image files
– stranger_anon
Apr 24 '13 at 10:48

what is shown when you do ls (hd0,msdos5)/ and ls (hd0,msdos6)/?
– Rinzwind
Apr 24 '13 at 10:33

ls (hd0,msdos5)/ shows /boot /home vmlinuz initrd.img ls (hd0,msdos6)/ shows /grub lost+found and many generic image files
– stranger_anon
Apr 24 '13 at 10:48

add a comment |

1 Answer
1

active

oldest

votes

up vote
0
down vote

From Troubleshooting Preparation it should be possible to fix this from command line. But the commands I found are a bit different than you have in your question. So...

Do a
```
ls (hd0,msdos5)/ 

ls (hd0,msdos6)/
```

If you see grub then do a set prefix="(hd0,msdos5)/grub" where 5 needs to be changed to correct number.

If you see boot then do a
```
set prefix="(hd0,msdos5)/boot/grub"

set root="(hd0,msdos5)"
```
where 5 needs to be changed to correct number.

After changing prefix you need to do a
```
insmod normal

normal
```
and reboot.

answered Apr 24 '13 at 10:39

Rinzwind

201k26385517

set prefix="(hd0,msdos5)/grub" doesn't work since my *.mod files are not present in this directory for some reason. So, insmod gives file not found error.
– stranger_anon
Apr 24 '13 at 10:50

This is the only method I know and I am afraid you will need a live cd...
– Rinzwind
Apr 24 '13 at 11:32

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

up vote
0
down vote

From Troubleshooting Preparation it should be possible to fix this from command line. But the commands I found are a bit different than you have in your question. So...

Do a
```
ls (hd0,msdos5)/ 

ls (hd0,msdos6)/
```

If you see grub then do a set prefix="(hd0,msdos5)/grub" where 5 needs to be changed to correct number.

If you see boot then do a
```
set prefix="(hd0,msdos5)/boot/grub"

set root="(hd0,msdos5)"
```
where 5 needs to be changed to correct number.

After changing prefix you need to do a
```
insmod normal

normal
```
and reboot.

answered Apr 24 '13 at 10:39

Rinzwind

201k26385517

set prefix="(hd0,msdos5)/grub" doesn't work since my *.mod files are not present in this directory for some reason. So, insmod gives file not found error.
– stranger_anon
Apr 24 '13 at 10:50

This is the only method I know and I am afraid you will need a live cd...
– Rinzwind
Apr 24 '13 at 11:32

add a comment |

up vote
0
down vote

From Troubleshooting Preparation it should be possible to fix this from command line. But the commands I found are a bit different than you have in your question. So...

Do a
```
ls (hd0,msdos5)/ 

ls (hd0,msdos6)/
```

If you see grub then do a set prefix="(hd0,msdos5)/grub" where 5 needs to be changed to correct number.

If you see boot then do a
```
set prefix="(hd0,msdos5)/boot/grub"

set root="(hd0,msdos5)"
```
where 5 needs to be changed to correct number.

After changing prefix you need to do a
```
insmod normal

normal
```
and reboot.

answered Apr 24 '13 at 10:39

Rinzwind

201k26385517

set prefix="(hd0,msdos5)/grub" doesn't work since my *.mod files are not present in this directory for some reason. So, insmod gives file not found error.
– stranger_anon
Apr 24 '13 at 10:50

This is the only method I know and I am afraid you will need a live cd...
– Rinzwind
Apr 24 '13 at 11:32

add a comment |

up vote
0
down vote

From Troubleshooting Preparation it should be possible to fix this from command line. But the commands I found are a bit different than you have in your question. So...

Do a
```
ls (hd0,msdos5)/ 

ls (hd0,msdos6)/
```

If you see grub then do a set prefix="(hd0,msdos5)/grub" where 5 needs to be changed to correct number.

If you see boot then do a
```
set prefix="(hd0,msdos5)/boot/grub"

set root="(hd0,msdos5)"
```
where 5 needs to be changed to correct number.

After changing prefix you need to do a
```
insmod normal

normal
```
and reboot.

answered Apr 24 '13 at 10:39

Rinzwind

201k26385517

From Troubleshooting Preparation it should be possible to fix this from command line. But the commands I found are a bit different than you have in your question. So...

Do a
```
ls (hd0,msdos5)/ 

ls (hd0,msdos6)/
```

If you see grub then do a set prefix="(hd0,msdos5)/grub" where 5 needs to be changed to correct number.

If you see boot then do a
```
set prefix="(hd0,msdos5)/boot/grub"

set root="(hd0,msdos5)"
```
where 5 needs to be changed to correct number.

After changing prefix you need to do a
```
insmod normal

normal
```
and reboot.

answered Apr 24 '13 at 10:39

Rinzwind

201k26385517

answered Apr 24 '13 at 10:39

Rinzwind

201k26385517

answered Apr 24 '13 at 10:39

Rinzwind

201k26385517

answered Apr 24 '13 at 10:39

Rinzwind

201k26385517

set prefix="(hd0,msdos5)/grub" doesn't work since my *.mod files are not present in this directory for some reason. So, insmod gives file not found error.
– stranger_anon
Apr 24 '13 at 10:50

This is the only method I know and I am afraid you will need a live cd...
– Rinzwind
Apr 24 '13 at 11:32

add a comment |

set prefix="(hd0,msdos5)/grub" doesn't work since my *.mod files are not present in this directory for some reason. So, insmod gives file not found error.
– stranger_anon
Apr 24 '13 at 10:50

This is the only method I know and I am afraid you will need a live cd...
– Rinzwind
Apr 24 '13 at 11:32

set prefix="(hd0,msdos5)/grub" doesn't work since my *.mod files are not present in this directory for some reason. So, insmod gives file not found error.
– stranger_anon
Apr 24 '13 at 10:50

This is the only method I know and I am afraid you will need a live cd...
– Rinzwind
Apr 24 '13 at 11:32

add a comment |

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