Questions tagged [bootable-disk]

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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
24 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
21 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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0answers
20 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
51 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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95 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
21 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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2answers
27 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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0answers
15 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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50 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
31 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
28 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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0answers
17 views

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
64 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
169 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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3answers
2k 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
125 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
95 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
396 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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1answer
32 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
106 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
53 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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0answers
554 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
57 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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0answers
34 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
446 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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0answers
20 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
575 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
999 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
63 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
50 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
23 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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1answer
8k views

El Capitan bootable installer on Mac Mini - “A required download is missing”

On a freshly created USB bootable disk for El Capitan (following these instructions which create a USB bootbale installer with sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/...
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0answers
25 views

How to re-format a deleted volume in macOS High Sierra/Mojave

After installing Catalina on a machine I realized some programs I want to run on this machine are still 32-bit. So I went to downgrade from Catalina to High Sierra and since there's no way to re-run ...
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0answers
189 views

Catalina USB not bootable

I have followed all tutorials available to make bootable Catalina USB I used following command to create bootable USB sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/...
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0answers
443 views

Catalina update fail, no bootable disk , can't access files

I'll start by saying that my issue is incredibly similar to Mac stuck in restart cycle after failed macOS Catalina update but being a new user I couldn't comment there nor I had any answers ...
2
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1answer
440 views

How to create a bootable Windows 10 USB with a Mac to boot/install on a PC?

I have no access to a Windows machine at the moment, but need to create a bootable Windows 10 USB stick from a Mac that can be used to boot and install on a PC (not a Mac). Microsoft provides the ISO ...
2
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5answers
20k 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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2answers
933 views

Issue trying to run macOS Mojave off a bootable external USB

I'm trying to run macOS off a USB drive, so I can troubleshoot some issues I've been having with a monitor. I've followed this how-to video, and can reboot (holding Option + Power On). Once I choose ...
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0answers
557 views

How to make a bootable USB in Catalina [duplicate]

/dev/disk1 (synthesized): #: TYPE NAME SIZE IDENTIFIER 0: APFS Container Scheme - +250.8 GB disk1 ...
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1answer
125 views

Bootable USB for Windows 7 isn’t showing up on MacBook Pro 12,2

I made a Windows 7 installation USB using Microsoft’s installation tool on my Windows PC. When I boot the Mac while holding Option. Only the Mac disk appears. The USB is NTFS. I checked if anything is ...
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2answers
550 views

Is it really not possible to run an earlier version of OS X than what the machine shipped with?

Just got a 2019 iMac, shipped with Mojave installed obviously. It never even occurred to me that it may not be able to run an earlier version of OS X, but after wasting tons of time trying to create a ...
2
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1answer
590 views

Can you use a bootable macOS USB created on a MacBook pro, to install macOS on another MacBook Pro?

So my friend has a 2011 MacBook Pro. The laptop's hard drive crashed and no longer works. He bought a new SSD as a replacement, but he doesn't have a way to install macOS on this new SSD, because he ...
2
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1answer
1k views

No install location available in Mac Internet Recovery

I tried to start my Mac & a folder with a question mark appeared. I researched on Google and discovered it was a problem with the Boot partition. I saw how to fix it. I used Opt ⌥ while booting ...
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0answers
540 views

How to create a custom macOS Mojave 10.14 read-only boot volume?

Preamble 5 or 10 years ago it was common for power users to create their own customized OS X 10.7/10.8/10.9 boot CDs and DVDs using third-party utilities like "BootCD." With the decline of CD/DVD ...
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0answers
37 views

Booting into macOS installer; possibly stuck

I'm trying to boot into a macOS Sierra installer that I made today. For the last about 20% of the progress bar, it was booting extremely slowly. Now, the progress bar has been stuck for the last ~20 ...
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0answers
934 views

Making Uninitialized APFS Volume Bootable

Recently I installed Ubuntu on my MacBook Pro (Mid 2012) on a second volume. I wanted to change to the Ubuntu Volume through Startup Manager and used this tutorial to do so: Installing Ubuntu on Mac ...
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0answers
12k views

Where does Mojave download the Mojave installer?

Similar to this, I would like to understand where Mojave is downloading itself when I download it from the App store. The Application folder doesn't have anything like Install MacOs Mojave or ...
4
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1answer
10k views

How to make bootable El Capitan installer in Mojave? [duplicate]

One of my friends who don't have a fast Internet connection asked me if I could install El Capitan (which is the highest version of OS X that his iMac supports) and I said sure. Today I went to App ...