Questions tagged [bootable-disk]

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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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1answer
223 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 ...
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22 views

SSD upgrade for iMac 2007

I'm looking to upgrade my slow 2007 iMac with a new 1TB SSD and looking for recommendations on which one to get. It seems fairly easy to install, I just want to choose the right SSD. I'm in Canada so ...
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4answers
5k views

Could not validate sizes – Operation not permitted. The operation couldn’t be completed. (OSStatus error 1.)

I am following instructions for creating a Bootable drive (generously provided in this answer by a gentleman named David Anderson). I am using a 16GB SD card to try to create a Bootable drive from my ...
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1answer
32 views

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 ...
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1answer
111 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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2answers
22 views

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 ...
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1answer
2k 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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1answer
35 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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1answer
120 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 ...
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0answers
32 views

How to reinstall MacOS El Capitan via USB-Stick on a 2010 MacBook Pro

I have a 2018 MacBook Pro running macOS Catalina and a 2010 MacBook Pro where I wiped all including the OS. I am now trying to reinstall macOS on this old MacBook Pro. However I encountered some ...
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1answer
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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 ...
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2answers
61 views

USB became write-protected after trying to install Windows on BOOTCAMP

I tried to install windows using BootCamp, and it formatted my usb and loaded windows files and gave me an error that not enough space available, so I changed my mind and wanted to use my pen drive ...
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4answers
69k views

Mac won't boot from USB drive: Prohibited sign

I tried to clean install OS X El Capitan on my Mac, but it won’t boot from the USB drive. Here are the steps I took to create the bootable USB drive (I have a Mid-2014 MacBook Pro with Retina Display):...
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1answer
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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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0answers
25 views

Error Installing Lion MAC OS on my Mac/book Pro Early 2011

Background: I purchased an old Mac Book Pro early 2011, It came with High sierra installed. Unfortunately I leave the mac on without the power cable, the mac entered into hibernation mode and ...
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0answers
23 views

Mac unable to boot memtest86 usd drive

I've just downloaded MemTest86, written it to a USB flash drive using Etcher, but I'm unable to boot from it. I can't see it in the boot options. What am I doing wrong? The main issue is my Mac keeps ...
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1answer
528 views

Bootable drive - disk is locked error

So I've followed the apples guide and also another guide on here on creating a bootable drive for MacOS Mojave. I bought a new flash drive, plugged it in and erased it. I set the SanDisk Cruzer ...
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0answers
28 views

Booting iMac from External SSD & UASP support in iMac, Docking station or USB to Sata Adapter?

I have Late 2013 iMac which has 5400 RPM HDD and I find it really slow. So, I purchased a Crucial MX500 SSD. I have now cloned my HDD to SSD using superduper and then booted from it. It worked. But I ...
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0answers
53 views

Unable to Download macOS Mojave from App Store, error prompted: “Update not found, the requested version of MacOS is not available” [duplicate]

I'm running Catalina on a MB Pro 2019 and I'm trying to create a separate volume running Mojave through a bootable external device. I've been doing this earlier this year and I had no problem ...
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498 views

Error on EL Capitan Installation This copy of the Install OS X El Capitan application can't be verified. It may have been corrupted or tampered

I have created bootable pendrive using https://support.apple.com/en-in/HT201372 I am trying to dump ELCapitan on my mac. but it throwing error This copy of the Install OS X El Capitan application can'...
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0answers
27 views

Bootable pendrive takes lot of time during 'Copying installer files to disk…'

I am creating bootable pendrive with MacOS_ELCapitan using Macbook Pro 2019(Cataline). using https://apple.stackexchange.com/a/388508 this thread. But i am getting Copying installer files to disk... i ...
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0answers
16 views

Creating a OS X El Capitan bootable installer on a MacBook Pro to reinstall a MacBook Air

Is it possible to create a bootable USB installer on a MacBook Pro and use it to install macOS on a MacBook Air? For example, I'd like to use a MacBook Pro to create a bootable USB installer for El ...
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0answers
55 views

iMac will not boot after Catalina auto-update

I woke up the other morning to a prohibitory icon (circle with a line through it) on my iMac. I believe this was due to a failed Catalina update but I am not sure. I had it set to auto-update. I am ...
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0answers
34 views

New MacBook Pro failed on OS reinstall, how do I get it out of Internet Recovery Mode?

I just got a new 16" MacBook Pro but things have gone awry while migrating my data from another Mac. Would appreciate any advice you might have. When I opened the new computer, I turned it on and ...
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1answer
31 views

Create bootable macOS USB for a non Apple computer [closed]

I tried several ways to create a bootable macOS USB for a non Apple personal computer. I expected it to work exactly like my bootable Ubuntu USB. macOS bootable USB seems to be working differently. It ...
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5answers
28k views

macOS Mojave: createinstallmedia: command not found

I'm following the official Apple guide to create a bootable installer for macOS Mojave: How to create a bootable installer for macOS when I execute the command: sudo /Applications/Install\ macOS\ ...
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0answers
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Trying to restore to factory setting but cannot install mac OS Catalina

I'm using a Macbook Pro retina 13" 2018. First, I was trying to restore the factory setting. I followed the instructions in many website and reach the internet recovery page where there is a globe and ...
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1answer
81 views

21.5" iMac Mid 2010 Won't Boot from USB to Install High Sierra

I tried clean installing High Sierra in by making bootable USB. I did the following: PRAM Reset Pressed Option Key at the Startup Choose USB with Install High Sierra from the Drives The Apple logo ...
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1answer
171 views

System hangs when creating bootable disk drive

I followed the instructions provided in this answer which explains how to make an El Capitan bootable disk from a system running Catalina I copied the commands exactly as prescribed, reproduced here: ...
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1answer
158 views

How do I use a bootable disk drive to install Mac OS on an iMac 2011?

I asked earlier about how to create a Bootable drive for the purpose of installing Mac OS on an older machine, and I received a great answer (thanks to @David Anderson). However, now that I have the ...
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2answers
722 views

How do I install Mac OS X El Capitan on my other iMac? [duplicate]

I'm relatively new to Mac and I cannot for the life of me figure out why it is so complicated to download an OS installer, create a bootable disk and use it on another machine. According to the ...
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2answers
964 views

How to create Catalina.app for creating bootable disk

I want to create bootable usb disk. According to the apple help page I need to download Catalina.app But I can't download it from App Store. Is it impossible to create Catalina bootable disk if I ...
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3answers
12k views

OS X Installation USB not detected in Startup Disk selection

I have a MacBook Pro 8.2. Recently I have download Sierra and Yosemite, and am currently running El Capitan. And I created a bootable USB for OS X Yosemite with DiskMaker X 6, in case Sierra goes ...
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1answer
36 views

How can I create a USB installer of OS X - El Capitan on a computer that is running macOS Sierra? [duplicate]

I've downloaded a copy of the OS X - El Capitan Installer, which I want to make a bootable USB of. However, it requires you to run the installer on whatever machine you are running, and installs it ...
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1answer
229 views

Downloaded InstallMacOSX.pkg gives an error of “This version of OSX 10.11 cannot be installed on this computer.” Why?

I downloaded InstallMacOSX.pkg to create a bootable USB drive and install OSX El Capitan on a separate computer. That computer was shipped with El Capitan. So, I am not installing it on the computer ...
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1answer
61 views

How to boot into Windows on SSD from macOS

I have a MacBook Pro (13-inch, 2018) running macOS Catalina (10.15.2). I have an old laptop that died, but that still has a (newer) functioning SSD. This SSD has Windows 10 already installed on it, ...
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0answers
18 views

2017 MacBook Pro has no startup disk when updating MacOS beyond Sierra

My 2017 15" MacBook Pro gives a flashing question mark every time I try to update to a newer OS. The install process looks completely normal until it restarts for the last time and boots up to a ...
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1answer
951 views

Can I update Mac OS 10.11 to 10.11.6 using a dmg of the update?

My internet connection is lame and the last time I tried to update with the download through App store, it downloaded and restarted but said that the verification of the update package was ...
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0answers
1k views

Create an old bootable USB Stick Sierra or High Sierra on a brand new Mac with Catalina

All I need is just an install media for sierra or high sierra. Sound's easy but unfortunately isn't. I have a MacBook Pro 13" with the latest Catalina installed (10.15.3). To download High Sierra ...
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0answers
168 views

Marking the EFI system partition on a USB flash drive as bootable

Using only MacOS (no GParted or other Linux utilities), how do I mark the EFI system partition on a USB flash drive as bootable? Insert an empty USB flash drive and launch Disk Utility Erase the ...
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3answers
54k views

No bootable device USB 2.0 MacBook Pro mid 2014

I've been tearing my hair out the last couple days trying to get Windows installed. I have a MacBook Pro Retina 15 inch mid 2014. Yosemite version 10.10.1. Win 7 64 bit iso (sha1 - ...
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0answers
35 views

Booting a Mac clone from a partition on a usb 3 external drive

I'm unable to boot a MacBook clone from a partition on an external drive. I'm in the process of finally upgrading the OS of my mid-2012 MacBook Pro from Yosemite to Catalina, and need to make a ...
2
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2answers
105 views

Please help: Win7 on external FireWire drive results in “No bootable device - insert boot disk…” error

I'm trying to get Win7 working from an external FireWire drive (Macbook pro mid 2009, OSX El Capitan). I've tried the two tutorials below; the installation seems smooth either way and mac recognizes ...
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0answers
21 views

Unbootable MacBook Pro can't boot up through an external HD with Mojave

I have a MacBookPro 2015 with High Sierra. It can't boot up. It is stuck at the startup black background with apple logo and the progress bar. In verbose mode, I saw I/O errors. I think the SSD is ...
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1answer
1k views

Creating bootable USB from “Install OS X El Capitan.iso” [duplicate]

I have "Install OS X El Capitan.iso" file. I have burned the image to a DVD and successfully installed El Capitan in the past. Now that my DVD drive is broken, I would like to create a bootable USB ...
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2answers
2k views

How to do a 1:1 clone of APFS disk?

I want to clone my internal drive to an external one, byte for byte, partition table to partition table. My MBP is using GPT with APFS, the standard now-a-days. I do not have a T2 chip, but I do have ...
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2answers
69 views

In APFS two boot containers (10.15.x on one and 10.14.x on the other) that share a common data container?

On an APFS volume, can I have two boot containers (beta 10.15.x on one and 10.14.x on the other) that share a common data container so that I can switch between startup disks while keeping the same ...
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1answer
62 views

Can I boot from an external drive with hardware encryption?

Can I boot from an external drive with hardware encryption? For example I can add a password to my Samsung T5 that turns on the drive’s hardware encryption. Can I boot from that, as long as I know ...
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0answers
25 views

MacBook Pro 2017 has problems when live booting from usb into parrot linux distro

I used Balena Etcher software to flash my usb with the image / iso of parrot linux distro the security edition. the live booting went fine but when it was all booted up I could not move mouse or do ...

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