Add new boot entry in BIOS using efibootmgr

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I am trying to add boot entry for MBR table (shadow) in SSD.

Using bcfg it is possible to browse to device
fs0:EFIbootbootx64.efi (pressing tab will show all the device in current directory).
But we don't have bcfg in our BIOS.

I've tried to add new boot entry as following:

efibootmgr -c -d /dev/sda -p 0 -L "mypba" -l "EFIbootbootx64.efi"

and also the following (tried partition 0 instead of 1)

efibootmgr -c -d /dev/sda -p 1 -L "mypba" -l "EFIbootbootx64.efi"

But in both cases the UIEFI boot fails to start.
I guess I might need to add it using --device bau I don't know which device match the MBR shadow.

Is it possible to do the "browse" (with TABs) or to find a file in a device using efibootmgr , so that we can configure new boot entry as required ?

edited Nov 19 at 5:58

asked Nov 18 at 10:44

ransh

1477

From what I understand, the shadow MBR is mapped in transparently. As such, no special support would be required.
– Daniel B
Nov 18 at 11:28

Thanks, I've edited the question,
– ransh
Nov 18 at 14:27

Ah, so you’re talking about UEFI boot. That’s a very different concern then. It won’t (readily) work with MBR shadowing, though I guess it could still be made to work if you get creative.
– Daniel B
Nov 18 at 16:02

The title is of this question is not too proper. What OS are you trying to boot ? Did you determine which is the actual partition ? You can't just try for it.
– Overmind
Nov 19 at 8:05

The actual partition is fs0:EFIbootbootx64.efi , and it is a MBR table (used with SED). I find it with simple ls from efi shell, but the problem is that I can't add new entery with bcfg becuase it is missing in this shell capability
– ransh
Nov 19 at 11:02

add a comment |

up vote
0
down vote

favorite

I am trying to add boot entry for MBR table (shadow) in SSD.

Using bcfg it is possible to browse to device
fs0:EFIbootbootx64.efi (pressing tab will show all the device in current directory).
But we don't have bcfg in our BIOS.

I've tried to add new boot entry as following:

efibootmgr -c -d /dev/sda -p 0 -L "mypba" -l "EFIbootbootx64.efi"

and also the following (tried partition 0 instead of 1)

efibootmgr -c -d /dev/sda -p 1 -L "mypba" -l "EFIbootbootx64.efi"

But in both cases the UIEFI boot fails to start.
I guess I might need to add it using --device bau I don't know which device match the MBR shadow.

Is it possible to do the "browse" (with TABs) or to find a file in a device using efibootmgr , so that we can configure new boot entry as required ?

edited Nov 19 at 5:58

asked Nov 18 at 10:44

ransh

1477

From what I understand, the shadow MBR is mapped in transparently. As such, no special support would be required.
– Daniel B
Nov 18 at 11:28

Thanks, I've edited the question,
– ransh
Nov 18 at 14:27

Ah, so you’re talking about UEFI boot. That’s a very different concern then. It won’t (readily) work with MBR shadowing, though I guess it could still be made to work if you get creative.
– Daniel B
Nov 18 at 16:02

The title is of this question is not too proper. What OS are you trying to boot ? Did you determine which is the actual partition ? You can't just try for it.
– Overmind
Nov 19 at 8:05

The actual partition is fs0:EFIbootbootx64.efi , and it is a MBR table (used with SED). I find it with simple ls from efi shell, but the problem is that I can't add new entery with bcfg becuase it is missing in this shell capability
– ransh
Nov 19 at 11:02

add a comment |

up vote
0
down vote

favorite

I am trying to add boot entry for MBR table (shadow) in SSD.

Using bcfg it is possible to browse to device
fs0:EFIbootbootx64.efi (pressing tab will show all the device in current directory).
But we don't have bcfg in our BIOS.

I've tried to add new boot entry as following:

efibootmgr -c -d /dev/sda -p 0 -L "mypba" -l "EFIbootbootx64.efi"

and also the following (tried partition 0 instead of 1)

efibootmgr -c -d /dev/sda -p 1 -L "mypba" -l "EFIbootbootx64.efi"

But in both cases the UIEFI boot fails to start.
I guess I might need to add it using --device bau I don't know which device match the MBR shadow.

Is it possible to do the "browse" (with TABs) or to find a file in a device using efibootmgr , so that we can configure new boot entry as required ?

edited Nov 19 at 5:58

asked Nov 18 at 10:44

ransh

1477

I am trying to add boot entry for MBR table (shadow) in SSD.

Using bcfg it is possible to browse to device
fs0:EFIbootbootx64.efi (pressing tab will show all the device in current directory).
But we don't have bcfg in our BIOS.

I've tried to add new boot entry as following:

efibootmgr -c -d /dev/sda -p 0 -L "mypba" -l "EFIbootbootx64.efi"

and also the following (tried partition 0 instead of 1)

efibootmgr -c -d /dev/sda -p 1 -L "mypba" -l "EFIbootbootx64.efi"

But in both cases the UIEFI boot fails to start.
I guess I might need to add it using --device bau I don't know which device match the MBR shadow.

Is it possible to do the "browse" (with TABs) or to find a file in a device using efibootmgr , so that we can configure new boot entry as required ?

bios uefi efi

edited Nov 19 at 5:58

asked Nov 18 at 10:44

ransh

1477

edited Nov 19 at 5:58

asked Nov 18 at 10:44

ransh

1477

edited Nov 19 at 5:58

asked Nov 18 at 10:44

ransh

1477

asked Nov 18 at 10:44

ransh

1477

asked Nov 18 at 10:44

ransh

1477

From what I understand, the shadow MBR is mapped in transparently. As such, no special support would be required.
– Daniel B
Nov 18 at 11:28

Thanks, I've edited the question,
– ransh
Nov 18 at 14:27

Ah, so you’re talking about UEFI boot. That’s a very different concern then. It won’t (readily) work with MBR shadowing, though I guess it could still be made to work if you get creative.
– Daniel B
Nov 18 at 16:02

The title is of this question is not too proper. What OS are you trying to boot ? Did you determine which is the actual partition ? You can't just try for it.
– Overmind
Nov 19 at 8:05

The actual partition is fs0:EFIbootbootx64.efi , and it is a MBR table (used with SED). I find it with simple ls from efi shell, but the problem is that I can't add new entery with bcfg becuase it is missing in this shell capability
– ransh
Nov 19 at 11:02

add a comment |

From what I understand, the shadow MBR is mapped in transparently. As such, no special support would be required.
– Daniel B
Nov 18 at 11:28

Thanks, I've edited the question,
– ransh
Nov 18 at 14:27

Ah, so you’re talking about UEFI boot. That’s a very different concern then. It won’t (readily) work with MBR shadowing, though I guess it could still be made to work if you get creative.
– Daniel B
Nov 18 at 16:02

The title is of this question is not too proper. What OS are you trying to boot ? Did you determine which is the actual partition ? You can't just try for it.
– Overmind
Nov 19 at 8:05

The actual partition is fs0:EFIbootbootx64.efi , and it is a MBR table (used with SED). I find it with simple ls from efi shell, but the problem is that I can't add new entery with bcfg becuase it is missing in this shell capability
– ransh
Nov 19 at 11:02

From what I understand, the shadow MBR is mapped in transparently. As such, no special support would be required.
– Daniel B
Nov 18 at 11:28

Thanks, I've edited the question,
– ransh
Nov 18 at 14:27

Ah, so you’re talking about UEFI boot. That’s a very different concern then. It won’t (readily) work with MBR shadowing, though I guess it could still be made to work if you get creative.
– Daniel B
Nov 18 at 16:02

The title is of this question is not too proper. What OS are you trying to boot ? Did you determine which is the actual partition ? You can't just try for it.
– Overmind
Nov 19 at 8:05

The actual partition is fs0:EFIbootbootx64.efi , and it is a MBR table (used with SED). I find it with simple ls from efi shell, but the problem is that I can't add new entery with bcfg becuase it is missing in this shell capability
– ransh
Nov 19 at 11:02

add a comment |

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