Questions tagged [bless]
bless is the command used to mark a disk as bootable by a Mac's firmware
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Change EFI label for external volume
I am booting a retrogaming system (Recalbox, linux-based) on my Macbook Pro 2009 (Intel, El Capitan) from an SD card (FAT format).
The SD card is currently displayed as "EFI boot" upon boot ...
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How to bless boot partition for Ubuntu 22.04 on an Intel (2009) MacBookPro
I asked this on the Ubuntu exchange where I personally think it belongs, but they directed me here so please don't close this and tell me to ask there.
I'm booting from the Mac OS X Lion installation ...
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How to rename/delete .kext file in Big Sur
I have one of those MacBook Pro's (2015) with the hardware fault which causes frequent spontaneous shutdowns.
The problem can be solved by renaming or deleting AppleThunderboltNHI.kext which I have ...
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Mac mini Problem - Won't boot after upgrading to High Sierra (Bless)
I bought a used Mac mini from a reliable source. He factory reset it, so we set about upgrading to the highest we can, High Sierra. I created a bootable USB on my iMac using the High Sierra installer. ...
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Problems with bless tool
The computer is an early 2015 13" MacBook Pro. Two weeks ago we sent my spouses 15" in for battery recall, and bought an OWC Aura Pro to replace my internal 1GB SSD (we SuperDuper'd her 15" MacBook's ...
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Bless error when installing rEFInd
I am trying to install rEFInd on my MacBook Pro 2018 laptop with the new T2 chip that adds extra boot security.
I have both used APFS and MacOS Extended (Journaled). I have also disabled secure boot ...
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How does Bless work?
I'm getting an SSD for my wife's MBP 2010. I was planning to install the old HDD and the new SSD into my MacPro and just use disk utility to copy all the info from her old disk to the new one. It ...
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What should the permissions on the /EFI partition be?
Currently, I am able to mount and edit the EFI partition without any special privileges. Is that correct?
I understand that the bootflags for SIP protected regions are stored in nvram which is ...
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Bless EFI/GPT Windows installation on separate HDD to boot on startup
There is a Windows 10 EFI/GPT installation on a separate drive in my MacPro next to my disk with the OSX installation.
The Apple Startup Manager shows the Win10 disk labeled as "EFI Boot". I can boot ...
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Using the -Bless Command on Multiboot Macs with 10.11 El Capitan
As part of our standard deployment, we tend to deploy multiple OSs on Macs, from 10.7 to 10.11. However, with the new SIP (System Integrity Protection), the -bless command no longer works properly.
I ...
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Why can't new cloned hard drives be used in 2009 MBP 13"
Ok strange one this and really can't figure it out.
Took out a dead 250gb apple (fujitsu) drive from 13" 2.53 intel core 2 duo
(mid 2009) model.
I cloned a copy of 10.6.8 using superduper to the new ...
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How to bless a partition using a custom EFI-boot file with non-conforming directory structures and/or file names?
Is there a guide on how to bless a partition for booting, one that doesn't have the default /System/Library/CoreServices/boot.efi structure?
For example, I installed GRUB on the default EFI System ...
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Set EFI to boot Windows via (U)EFI one time
On my late 2012 Mac Mini, I have installed both Mac OS X Mavericks (with FileVault) and Windows 8.1 (natively, not via Bootcamp):
/dev/disk0
#: TYPE NAME ...
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bless --nextonly parameter fails
I am using the bless command to reboot my Mac mini into VMware ESX.
sudo bless --device /dev/disk3s1 --setboot --nextonly && sudo reboot
Booting ESX works but after the next reboot the Mac ...
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