Questions tagged [bootable-disk]

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Can't boot up macOS system nor reinstall/format it

I'm stuck here with a strange situation. When I turn on my macbook pro 13 m1, I can't select the system to boot up with. Nothing pops up, can't run it in a safe mode. When I go to the disk utility ...
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28 views

Create a Bootable ISO (DVD) image from a directory

I am attempting to create a custom FreeBSD bootable ISO to be used to create VirtualBox headless VMs. I have to make a small change in the /boot/loader.conf file to allow FreeBSD to output messages ...
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1 answer
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How to create a bootable Windows 11 installation USB drive (for a PC) on macOS and avoid the error "media driver on your computer is missing"? [duplicate]

I bought a PC without OS and I want to install Windows 11 on it. But I only have a Mac and a flash drive at hand. Neither my Mac nor the PC have a DVD drive. I cannot use Microsoft's official Media ...
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Run Linux system in bootable USB but very slow on Mac laptop

I install the Linux (Ubuntu 22.04) in the USB 3.0 drive by my MacBook Pro (Retina Early 2015 13"), but when I open Linux, everything is slow. For example, when I open Firefox, I need to wait 5 ...
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1 answer
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Adding an ISO image to an APFS volume and booting it

I know there is tons of information on this and similar questions on this site, but I have been at this for a couple hours and could use some confirmation of a few specific details. I just want to ...
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462 views

How can I use Windows to create a High Sierra USB flash drive installer from the disk image (.dmg) file not downloaded from Apple?

I have tried methods from previous OSes. My Mac will recognize my USB stick, but I get the error message "The path /System/Installation/Packages/OSInstall.mpkg appears to be missing or damaged&...
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1 vote
1 answer
99 views

Need Boot Manager at startup every time. (old question, new problem)

I need the boot manager at startup every time. I have a 2014 mini with 2 bootable partitions. Yosemite on one and Catalina on the other. Obviously, need to run legacy software. When running Yosemite, ...
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62 views

Options to create a macOS recovery disk only with recovery tools included?

I have several Macbooks available that need to be restored, and cannot be connected to the network due to their location, and other conditions. At the workplace I was provided with a USB flash drive ...
0 votes
1 answer
373 views

Will an external NVME drive at 2700 MB/s work on macOS?

I’m looking to buy a Samsung 980 pro NVMe M.2 and sticking it in an ACASIS enclosure. It should get 2700 MB/s read and write. I’m wondering if that will be fast enough to boot and run macOS purely ...
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2 votes
1 answer
725 views

Samsung T7 as bootdrive not suitable?

Does anybody have experience with a Samsung T7 as bootdrive? I used external SSDs for about 4-5 iMacs (all different SSD brands). This time I used a fairly expensive Samsung T7 for my own iMac. Since ...
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Was trying to upgrade an El Capitan iMac, deleted entire HD in setup process... How do I make a bootable USB of Capitan on my High Sierra Mac? [duplicate]

The title says it all... I've tried several guides off Google .. There's no recovery on the iMac that had El Capitan... I have another iMac with High Sierra, so I how do I make a bootable El Capitan ...
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1 answer
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M1 Air not seeing Big Sur installers in boot picker

I have an M1 Air, and I wanted to downgrade it to Big Sur (more specifically, 11.2.3). So I created a USB installer, tested it with my Intel machines, and they were able to boot into the installer USB ...
1 vote
0 answers
661 views

MacOS Monterey createinstallmedia Error : Failed to extract AssetData/boot/Firmware/Manifests/InstallerBoot/* from update bundle

I'm trying to create a bootable USB with a MacOS Monterey disk image. I have a MacBook Pro Mid 2012 i5 (MacBookPro9,2). I'm using Open Core Legacy Patcher (OCLP) to run Monterey (macOS 12.4 21F79 - 12....
1 vote
0 answers
72 views

How do I install Big Sur from a USB without having to change settings in Startup Security Utility

I sold my old Air on eBay and the customer returned it with "fakesoftware" as the username. I ended up keeping both the Mac and the money because this user was a scammer of some sort. Anyway,...
3 votes
1 answer
705 views

How do I enable USB boot after deleting my recovery partition?

I did a rather careless thing while in disk recovery (I was wiping a MacBook Pro 2018 for re-use) and I accidentally deleted the root volume, which means everything. Because I don't have a recovery ...
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1 answer
463 views

I removed the rEFInd and rEFIt boot managers and now I've lost Windows Bootcamp from the Mac Startup Manager

I installed rEFInd boot manager because I wanted to add a linux partition. I already had bootcamp set up. However, after installing rEFInd, my Mac UI scaling was too large and slightly blurred. I have ...
1 vote
1 answer
448 views

Why use the legacy Apple Partition Map scheme for macOS install media?

Several guides to creating disk images of macOS install media (using the createinstallmedia command) recommend creating the disk image like this: hdiutil create \ -size 10g \ -type UDTO -...
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Can’t boot into MacOS from Windows(Bootcamp)

When pressing the option during startup, MacOS isn’t shown as an option to boot into. Using the tray in win10 to “Restart in MacOS” also doesn’t work. It just restarts back into Windows 10. It is an ...
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1 answer
460 views

Installing macOS on an external SSD fails (m1)

When trying to install MacOS on an external SSD, the internal SSD is always booted when restarting. When I select the external SSD in the bootloader, it only shows that the installation is corrupt. In ...
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1 answer
1k views

Bootcamp- your device ran into a problem and needs to restart

Have had many successful USB Windows 10 installs before. Not sure what's going on here. I have tried creating the USB with a PC using Rufus, Hasleo, and windows media creation tool. No matter, same ...
0 votes
2 answers
658 views

Best type of disk image to use on NAS to archive Mac system copies on a NAS

I bought a shiny new NAS with plenty of space. I also have quit a few old pysical external hard drives with bootable macOS system copies: I always make a copy of my system which I store away when I ...
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1 vote
0 answers
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How to check Startup Security Utility values for MBP with Apple T2 Security

I am trying to check the values for Apple T2 Security - Startup Security Utility for "Secure Boot" and "Allowed Boot Media" (which allow the Macbook Pro to boot from an external ...
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2 answers
130 views

How do I know how much space createinstallmedia needs?

I want to make a Bootable installer, and to save on physical space (having a bunch of flash drives laying around), I decided to have a drive in MacOS Extended (Journal) format partitioned to contain ...
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1 vote
2 answers
2k views

Downloading Catalina to M1 for Intel Macbook [duplicate]

I need to download macOS Catalina and make a bootable USB for my macbook pro 2015 which has intel chip. But have only m1 chip macbooks here, can't download from app store. It says Not compatible for ...
1 vote
0 answers
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Bootable Drive Problem

I've followed this guide on creating a bootable drive to downgrade from Big Sur for MacOS Catalina. I bought a new flash drive, plugged it in and erased it. I set the SanDisk Cruzer Blade Media to a ...
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0 answers
103 views

Booting MacOS Big Sur from USB not working (MacBook Pro mid 2015)

Have created a bootable USB installer according to these instructions: https://support.apple.com/en-us/HT201372 for my MacBook Pro mid 2015 (A1398). Pressed Option key while booting, selected the USB ...
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Corrupted USB Pendrive is not listing in Disk Utility, but listed in ioreg -p IOUSB

I was attempting to create a bootable Windows 10 USB stick with help of Rufus. I ran it on a Windows 10 VM (via VMWare Fusion) and left Rufus do the job. After a couple of hours, I came back to check ...
2 votes
2 answers
602 views

Making an ISO file from an Apple provided DMG file? [duplicate]

I'd like to make a bootable ISO file from Apple-provided DMG file located under Download macOS using Safari on your Mac from: https://support.apple.com/en-us/HT211683. They provide a DMG file with a ...
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1 vote
1 answer
159 views

Problem creating a Windows 10 bootable USB on Windows, to work on a MacBook Pro

I have a MacBook Pro 2013, now with a clean SSD (no OS). I have a Windows 10 PC from which I am trying to create a bootable USB from a Windows 10 ISO file. I tried a lot of combinations and softwares, ...
0 votes
1 answer
979 views

How can I create a BIOS USB stick for ASUS ROG Strix X570-F in OS X?

I need to install a new BIOS for my new motherboard ASUS ROG Strix X570-F here where I need USB flashback tool and BIOSRenamer. I need flash an USB stick and then rename the file somehow but the tools ...
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3 votes
2 answers
214 views

Mac not bootable, save files with other mac

I am looking for a way to recover files from a Mac. Following facts: The files I want to recover are on Mac #2. I have another Mac if I need it. Mac #2 no longer turns on. It no longer boots up. It ...
0 votes
1 answer
254 views

How can I make a bootable USB copy of Mojave downloaded from Apple when the file is an app and not a disk image?

When I try to open the Mojave install app on my computer with Big Sur, it says that the operating system is too old and so it will not let me open it in order to install it on the external usb drive. ...
0 votes
1 answer
120 views

Can I boot from a USB stick containing MacOS if there is an issue with MacintoshHD?

So my mac HD started playing up and then refused to work, would not boot. Tried recovery mode but it wouldn't allow me to run first aid on the Macintosh HD drive. Created a MacOS USB boot up stick by ...
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0 answers
414 views

Holding down the option key isn't allowing me to see boot menu on iMac mid-2010

I get an old iMac mid 2010 without hard drive and when I press "alt" on Windows keyboard (equivalent of "option" on Mac) nothing happens. Then the Apple logo appears with a charge ...
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1 answer
968 views

Big Sur bootable installer cannot be created or corrupted after creation

I have an iMac 27" 2015 that I want to do a clean install of Big Sur on it. I followed the tutorial on creating the bootable installation media but it failed with an error: "/Applications/...
0 votes
2 answers
410 views

How to change USB scheme when making bootable Catalina installer?

Background: Upgraded to Big Sur on 2020 MacPro (not the one with M1 chip), hate it, trying to revert to Catalina using a USB bootable installer (followed instructions given at the Apple website How to ...
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3 votes
1 answer
844 views

How to create a bootable USB Drive that will boot on BOTH an Intel Mac and a PC

I recently created a bootable USB Thumb Drive containing a Linux Live Distro. I created it on a PC running Windows and tested it successfully on the same PC. Now I want to run the same Linux OS on my ...
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Mac recognizes usb installer, but instead of booting into it, it boots from internal hdd

I've used this usb drive in the past to restore macs and I don't remember what I did to get it to work. I get into the drive selection for booting, the usb with high sierra installer is there, but ...
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15 votes
7 answers
62k views

How can I download the macOS Big Sur installer on a Mac which is already running Big Sur?

I'm trying to create a Big Sur installer flash drive. All the tutorials tend to gloss over how to download the installer, but I'm finding that since this Mac is already upgraded, I can't download it ...
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1 answer
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How to make a bootable, *usable* macOS USB key (NOT an installer)?

2011 iMac running Sierra I would like to have a copy of macOS that I can actually boot from and use on a USB key, so that I can run Carbon Copy Cloner from it to make backups of any volume on the ...
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1 vote
0 answers
86 views

SSD upgrade for iMac 2007 - criteria [closed]

I'm looking to upgrade my slow 2007 iMac with a new 1TB SSD and looking for recommendations on what parameters to look - that is, which SSDs are compatible with my older iMac, and which are best? It ...
4 votes
2 answers
2k views

Macbook Air 2019 will not boot from USB or complete Internet Recovery, Exhausted options

Internet Recovery fails. USB Boot fails. Target mode won't mount. Macbook Air 2019 TrueTone, ran before I deleted the SSD (stupid). Battery shot, requires power supply to run. Tried Internet Recovery ...
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0 votes
2 answers
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If I make a bootable pendrive running macOS, will downloaded apps and data persist on each boot?

Sorry if this seems like a basic question, but I couldn't find a clear statement on this anywhere: I wish to make a bootable pendrive running macOS Mojave, so that I can run some 32-bit apps. So I ...
1 vote
2 answers
2k views

Unable to install macOS Catalina with bootable USB without macOS recovery partition

I had deleted the macOS and macOS recovery partitions many months ago to increase the capacity for the Bootcamp Windows. Now I want to reinstall macOS via a bootable USB, but on booting into it, it ...
7 votes
3 answers
44k views

How to create a bootable OS X Snow Leopard USB drive?

How can I achieve this from either macOS Catalina or Windows 10? I can't seem to find a guide online. I've downloaded Mac OS X Snow Leopard Install DVD from the Internet Archive. Keep in mind that ...
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1 vote
1 answer
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Is there any way that we could load disk utility or any disk repair tool from a USB in mac?

Recently my Mac crashed due to kernel panic. I tried using disk utility to repair the disk but the parent disk couldn't be repaired. And I opened up the terminal and erased the current boot disk. And ...
4 votes
2 answers
6k views

How can you create a valid/reliable disk image of APFS drives?

Last year before Catalina was released, I tried to perform a disk image of my boot drive of Mojave (macOS 10.14) on a new computer before updating and customizing it. I have done this for years to ...
1 vote
1 answer
115 views

Mac Pro not booting after update

Mac pro 2009 4,1 Boots up but no video output (black screen). It was working fine on the old OS that was on it(not sure which OS). I want to update to the highest OS (el capitan) it can run. So I did. ...
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0 votes
1 answer
2k views

The app store download could not start because it has already been downloaded too many times

I wanted to reinstall mac on my Apple Macbook Air 2017. I restarted my Mac while holding down Command+R and Erased the disk in "Disk Utility". I clicked on "Reinstall macOS" but I ...
0 votes
1 answer
199 views

iMac in recovery mode, can’t install macOS no matter what I try

My wife and I purchased an desktop iMac A1311 from Facebook market place. It was perfectly functional but the seller hadn’t removed any of their personal info before selling it so my wife erased it (I ...
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