Questions tagged [bootable-disk]

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36 questions with no upvoted or accepted answers
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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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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 ...
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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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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 ...
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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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2k views

Bootable USB with Ubuntu does not show in boot sequence options

I followed this question (How to create a bootable Ubuntu USB stick Using OS X 10.10.2) to turn the Ubuntu 14.04 ISO to a bootable USB. I have a MBP (with touchbar) running 10.12.5. After rebooting ...
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160 views

Bootcamp partition won't boot MacOS beta

I created and used a Windows 10 Bootcamp partition on my retina MBP 2013 running MacOS 10.12.2 about a month ago. I recently returned from a three week trip (I left my laptop at home) and installed ...
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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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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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567 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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59 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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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 ...
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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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421 views

How to create a bootable USB key of Sierra, from High Sierra?

I have a 2018 MBP running High Sierra. I need to do some troubleshooting on another older Mac that is running Sierra, so I want to create a bootable USB key of Sierra. Unfortunately my High Sierra ...
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449 views

PowerMac G5 stuck with full fan in OF, no boot devices

I'm working on a PowerMac9,1 (Late 2004 PowerMac G5 with single core) that refuses to recognize any external boot devices on the option/alt boot manager screen, including Debian and the Mac OS X ...
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182 views

Can the 2009 MacBook Air be booted from USB?

There seems to be a lot of confusion, conflicting information and assumptions about this matter, so I'd like to clarify that this question is specifically about the 2009 model of MacBook Air. I am ...
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70 views

How to Create Virtual Bootable Thunderbolt Drive

Considering the speed and versatility of Thunderbolt, it can be very useful to boot from a thunderbolt device on a Mac. Would it be possible to use a disk image on one Mac to create a virtual ...
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132 views

Problem Installing High Sierra (10.13)

I have created bootable pen-drive using installer. I performed following Steps but it failes. Erase the Hard-disk from disk utility. restart the iMac (hold down - Option key) it shows me the pen-...
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749 views

How To Create A Bootable USB Installer for Windows, Linux and OSX?

How can I use my 120GB USB Drive as an ultimate IT tool? I want to have the following ISOs partitioned off and accessible through a bootloader (any): Windows 5,6,7,8,10 OSX 10.6,7,8,9,10 GParted (...
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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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105 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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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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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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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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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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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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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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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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190 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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69 views

What does one do when MacBook Pro 2017 not recognizing thumb drive needed to boot startup?

I wiped my 2017 MBP's drive at the direction of Apple support, to start fresh on my MacBook and try to eliminate/pinpoint a battery drain issues...now there is no bootable disk on the MPB. I went ...
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266 views

MacPro4,1 USB Boot?

Just bumped into an odd problem with my MacPro4,1 (2009/Nehalem) wherein I cannot boot from USB bootable disks. My various disks are recognized from System Preferences -> Startup Disk, however they ...
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2k views

iMac does not show bootable USB drive on boot menu

I downloaded the Linux USB Image of memtest86 and used dd to get the image on a USB flash drive. Whenever I used it on an iMac Late 2006 (running SL) or the newest Macbook Air 13'' (running ML) the ...
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731 views

Restoring to previous state: concerns with Carbon Copy Cloner and Time Machine conflict

One week ago I experienced an odd and catastrophic failure of my MacBook Pro. The details of the failure are not important, and the relevant parts have been replaced, among them a new HDD. Side note: ...
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1answer
110 views

Is it possible to a full system Copy and run it in Parallels?

i have Mac Server and i want to have a full copy of the System. So i can play around and test new Software and Upgrades before i apply it to the real System. I am using Parallels and want to create a ...