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Alternate way to boot in Recovery Mode with Big Sur

Alternative Way to Boot in Recovery Mode with Big Sur

Just to share my tryout after reading first post of David Anderson who helped me to find this.

The environment it's little different from VMW Fusion, actually it'sit is this:
Guest OS: Big Sur 11.6
Host OS: Big Sur 11.6 on MBA 2020 (Intel)
Hypervisor: Virtual Box 6.1.28

I'veI have tried every way to boot in Recovery Mode, either using nvram, or through EFI Internal Shell, all with no success (within my environment).

  • sudo nvram "recovery-boot-mode=unused" ==> With this old (Catalina) var, I even get “Error setting variable” in Big Sur.
  • sudo nvram internet-recovery-mode=RecoveryModeDisk ==> when rebooting GuestOS, seems variable to be ignored as MBA don't actually boot in Recovery Mode.
  • dmpstore -l csr.bin ==> returns “No matching variable found.”

And also booting in EFI Internal Shell and looking for CoreServices/boot.efi, I searched through all FSN: mapping table entries (all vols/partitions of local internal Disk of MBA), with no success. It seems System/Library/CoreServices is hidden or encrypted (SSV?)

Then, as suggested by t0rr3sp3dr0 here in GitHub, tried to look for CoreServices boot.efi, this way and I did as follow:

  • In VirtualBox under VM Settings —> Storage, mount Big Sur Installation image. And check “Live CD/DVD” option.
  • Start VM and press ESC key
  • Choose Boot Manager —> EFI Internal Shell
  • Look for Recovery Partition, in my environment under FS7, type:
    FS7:
    vol
    to check for HFS+.
  • Type:
    cd System/Library/CoreServices
    boot.efi
    ENTER

enter image description here

Finally, my GuestOS (BigSur 11.6) bootboots in Recovery Mode!
Hope might help.

Alternate way to boot in Recovery Mode with Big Sur

Just to share my tryout after reading first post of David Anderson who helped me to find this.

The environment it's little different from VMW Fusion, actually it's this:
Guest OS: Big Sur 11.6
Host OS: Big Sur 11.6 on MBA 2020 (Intel)
Hypervisor: Virtual Box 6.1.28

I've tried every way to boot in Recovery Mode, either using nvram, or through EFI Internal Shell, all with no success (within my environment).

  • sudo nvram "recovery-boot-mode=unused" ==> With this old (Catalina) var, I even get “Error setting variable” in Big Sur.
  • sudo nvram internet-recovery-mode=RecoveryModeDisk ==> when rebooting GuestOS, seems variable to be ignored as MBA don't actually boot in Recovery Mode.
  • dmpstore -l csr.bin ==> returns “No matching variable found.”

And also booting in EFI Internal Shell and looking for CoreServices/boot.efi, I searched through all FSN: mapping table entries (all vols/partitions of local internal Disk of MBA), with no success. It seems System/Library/CoreServices is hidden or encrypted (SSV?)

Then, as suggested by t0rr3sp3dr0 here in GitHub, tried to look for CoreServices boot.efi, this way and I did as follow:

  • In VirtualBox under VM Settings —> Storage, mount Big Sur Installation image. And check “Live CD/DVD” option.
  • Start VM and press ESC key
  • Choose Boot Manager —> EFI Internal Shell
  • Look for Recovery Partition, in my environment under FS7, type:
    FS7:
    vol
    to check for HFS+.
  • Type:
    cd System/Library/CoreServices
    boot.efi
    ENTER

enter image description here

Finally, my GuestOS (BigSur 11.6) boot in Recovery Mode!
Hope might help.

Alternative Way to Boot in Recovery Mode with Big Sur

Just to share my tryout after reading first post of David Anderson who helped me to find this.

The environment it's little different from VMW Fusion, actually it is this:
Guest OS: Big Sur 11.6
Host OS: Big Sur 11.6 on MBA 2020 (Intel)
Hypervisor: Virtual Box 6.1.28

I have tried every way to boot in Recovery Mode, either using nvram, or through EFI Internal Shell, all with no success (within my environment).

  • sudo nvram "recovery-boot-mode=unused" ==> With this old (Catalina) var, I even get “Error setting variable” in Big Sur.
  • sudo nvram internet-recovery-mode=RecoveryModeDisk ==> when rebooting GuestOS, seems variable to be ignored as MBA don't actually boot in Recovery Mode.
  • dmpstore -l csr.bin ==> returns “No matching variable found.”

And also booting in EFI Internal Shell and looking for CoreServices/boot.efi, I searched through all FSN: mapping table entries (all vols/partitions of local internal Disk of MBA), with no success. It seems System/Library/CoreServices is hidden or encrypted (SSV?)

Then, as suggested by t0rr3sp3dr0 here in GitHub, tried to look for CoreServices boot.efi, this way and I did as follow:

  • In VirtualBox under VM Settings —> Storage, mount Big Sur Installation image. And check “Live CD/DVD” option.
  • Start VM and press ESC key
  • Choose Boot Manager —> EFI Internal Shell
  • Look for Recovery Partition, in my environment under FS7, type:
    FS7:
    vol
    to check for HFS+.
  • Type:
    cd System/Library/CoreServices
    boot.efi
    ENTER

enter image description here

Finally, my GuestOS (BigSur 11.6) boots in Recovery Mode!
Hope might help.

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villoez
  • 309
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  • 7

Alternate way to boot in Recovery Mode with Big Sur

Just to share my tryout after reading first post of David Anderson who helped me to find this.

The environment it's little different from VMW Fusion, actually it's this:
Guest OS: Big Sur 11.6
Host OS: Big Sur 11.6 on MBA 2020 (Intel)
Hypervisor: Virtual Box 6.1.28

I've tried every way to boot in Recovery Mode, either using nvram, or through EFI Internal Shell, all with no success (within my environment).

  • sudo nvram "recovery-boot-mode=unused" ==> With this old (Catalina) var, I even get “Error setting variable” in Big Sur.
  • sudo nvram internet-recovery-mode=RecoveryModeDisk ==> when rebooting GuestOS, seems variable to be ignored as MBA don't actually boot in Recovery Mode.
  • dmpstore -l csr.bin ==> returns “No matching variable found.”

And also booting in EFI Internal Shell and looking for CoreServices/boot.efi, I searched through all FSN: mapping table entries (all vols/partitions of local internal SSDDisk of MBA), with no success. It seems System/Library/CoreServices is hidden or encrypted (SSV?)

Then, as suggested by t0rr3sp3dr0 here in GitHub, tried to look for CoreServices boot.efi, this way and I did as follow:

  • In VirtualBox under VM Settings —> Storage, mount Big Sur Installation image. And check “Live CD/DVD” option.
  • Start VM and press ESC key
  • Choose Boot Manager —> EFI Internal Shell
  • Look for Recovery Partition, in my environment under FS7, type:
    FS7:
    vol
    to check for HFS+.
  • Type:
    cd System/Library/CoreServices
    boot.efi
    ENTER

enter image description here

Finally, my GuestOS (BigSur 11.6) boot in Recovery Mode!
Hope might help.

Alternate way to boot in Recovery Mode with Big Sur

Just to share my tryout after reading first post of David Anderson who helped me to find this.

The environment it's little different from VMW Fusion, actually it's this:
Guest OS: Big Sur 11.6
Host OS: Big Sur 11.6 on MBA 2020 (Intel)
Hypervisor: Virtual Box 6.1.28

I've tried every way to boot in Recovery Mode, either using nvram, or through EFI Internal Shell, all with no success (within my environment).

  • sudo nvram "recovery-boot-mode=unused" ==> With this old (Catalina) var, I even get “Error setting variable” in Big Sur.
  • sudo nvram internet-recovery-mode=RecoveryModeDisk ==> when rebooting GuestOS, seems variable to be ignored as MBA don't actually boot in Recovery Mode.
  • dmpstore -l csr.bin ==> returns “No matching variable found.”

And also booting in EFI Internal Shell and looking for CoreServices/boot.efi, I searched through all FSN: mapping table entries (all vols/partitions of local internal SSD of MBA), with no success. It seems System/Library/CoreServices is hidden or encrypted (SSV?)

Then, as suggested by t0rr3sp3dr0 here in GitHub, tried to look for CoreServices boot.efi, this way and I did as follow:

  • In VirtualBox under VM Settings —> Storage, mount Big Sur Installation image. And check “Live CD/DVD” option.
  • Start VM and press ESC key
  • Choose Boot Manager —> EFI Internal Shell
  • Look for Recovery Partition, in my environment under FS7, type:
    FS7:
    vol
    to check for HFS+.
  • Type:
    cd System/Library/CoreServices
    boot.efi
    ENTER

enter image description here

Finally, my GuestOS (BigSur 11.6) boot in Recovery Mode!

Alternate way to boot in Recovery Mode with Big Sur

Just to share my tryout after reading first post of David Anderson who helped me to find this.

The environment it's little different from VMW Fusion, actually it's this:
Guest OS: Big Sur 11.6
Host OS: Big Sur 11.6 on MBA 2020 (Intel)
Hypervisor: Virtual Box 6.1.28

I've tried every way to boot in Recovery Mode, either using nvram, or through EFI Internal Shell, all with no success (within my environment).

  • sudo nvram "recovery-boot-mode=unused" ==> With this old (Catalina) var, I even get “Error setting variable” in Big Sur.
  • sudo nvram internet-recovery-mode=RecoveryModeDisk ==> when rebooting GuestOS, seems variable to be ignored as MBA don't actually boot in Recovery Mode.
  • dmpstore -l csr.bin ==> returns “No matching variable found.”

And also booting in EFI Internal Shell and looking for CoreServices/boot.efi, I searched through all FSN: mapping table entries (all vols/partitions of local internal Disk of MBA), with no success. It seems System/Library/CoreServices is hidden or encrypted (SSV?)

Then, as suggested by t0rr3sp3dr0 here in GitHub, tried to look for CoreServices boot.efi, this way and I did as follow:

  • In VirtualBox under VM Settings —> Storage, mount Big Sur Installation image. And check “Live CD/DVD” option.
  • Start VM and press ESC key
  • Choose Boot Manager —> EFI Internal Shell
  • Look for Recovery Partition, in my environment under FS7, type:
    FS7:
    vol
    to check for HFS+.
  • Type:
    cd System/Library/CoreServices
    boot.efi
    ENTER

enter image description here

Finally, my GuestOS (BigSur 11.6) boot in Recovery Mode!
Hope might help.

Source Link
villoez
  • 309
  • 1
  • 2
  • 7

Alternate way to boot in Recovery Mode with Big Sur

Just to share my tryout after reading first post of David Anderson who helped me to find this.

The environment it's little different from VMW Fusion, actually it's this:
Guest OS: Big Sur 11.6
Host OS: Big Sur 11.6 on MBA 2020 (Intel)
Hypervisor: Virtual Box 6.1.28

I've tried every way to boot in Recovery Mode, either using nvram, or through EFI Internal Shell, all with no success (within my environment).

  • sudo nvram "recovery-boot-mode=unused" ==> With this old (Catalina) var, I even get “Error setting variable” in Big Sur.
  • sudo nvram internet-recovery-mode=RecoveryModeDisk ==> when rebooting GuestOS, seems variable to be ignored as MBA don't actually boot in Recovery Mode.
  • dmpstore -l csr.bin ==> returns “No matching variable found.”

And also booting in EFI Internal Shell and looking for CoreServices/boot.efi, I searched through all FSN: mapping table entries (all vols/partitions of local internal SSD of MBA), with no success. It seems System/Library/CoreServices is hidden or encrypted (SSV?)

Then, as suggested by t0rr3sp3dr0 here in GitHub, tried to look for CoreServices boot.efi, this way and I did as follow:

  • In VirtualBox under VM Settings —> Storage, mount Big Sur Installation image. And check “Live CD/DVD” option.
  • Start VM and press ESC key
  • Choose Boot Manager —> EFI Internal Shell
  • Look for Recovery Partition, in my environment under FS7, type:
    FS7:
    vol
    to check for HFS+.
  • Type:
    cd System/Library/CoreServices
    boot.efi
    ENTER

enter image description here

Finally, my GuestOS (BigSur 11.6) boot in Recovery Mode!