bootcamp – Can I install MacOS and Windows 10 on the same external SSD without an internal drive?

I have a MacBook Pro 13′ 2017 with 250GB of storage. The internal SSD has died unfortunately. Occasionally, it will show up and be able to boot from it but leaving the MacBook on sleep for more than an hour or so makes it crash and it refuses to boot then.
So, I’ve since installed MacOS on my external SSD (Samsung T7 Touch 500GB) which works fine. Now, I’d like to also install Windows 10 on that same drive but I’m unsure how I would do that or if it’s even possible.
The first problem that I encounter, for example, would be that Bootcamp tells me to unplug all external devices before I can run it, which of course I can’t because that’s where I have my MacOS installed.
I’ve seen this question but I’m not sure how I would go about setting up my partitions as described in one answer.

MacOS doesn’t boot and no recovery mode after installing BootCamp and Windows 10

I have problem after installing Windows 10 on 2020 i9 MacBookPro. BootCamp+Windows installations didn’t go smooth, got BSOD with kernel security errors (don’t remember exact error name), so did SMC reset as suggested in some posts. This helped with BootCamp and got Windows 10 installed after some attempts, however it completely ruined MacOS.

Now I can boot W10 fine if selected with Option, BootCamp driver on Windows is installed and sees 2 partitions – MacHD and Windows. However trying to boot into MacOS from Windows bootcamp menu or from Option boot menu leads to constant reboots either with with Apple icon or spinning wheel on screen. Trying to boot external USB drive with BigSur installer also fails – it starts to boot and then reboots after some seconds.

Recovery mode Cmd+R does not work (nothing happens, keeps rebooting). Internet recovery mode starts, allows to select WiFi network, but either reboots after 7-8 minutes of loading, or ends with errors like 2003F. Will try different WiFi network later, but no much hope here.

I don’t have another Mac with FW/TB port available, so can’t test target disk mode, but checked – it boots in target mode when T is pressed.

Is there anything I can do to restore MacOS/recovery mode myself, or the only option is Apple service (not available in my city)?

Second display works on MacOS but not on windows under bootcamp

Second display works on MacOS but not on windows under bootcamp – Ask Different

hard drive – Bootcamp – Windows 10 – No bootable device — insert boot disk and press any key

I have got a problem with booting into Windows 10 after changing Superdrive to SSD – “No bootable device — insert boot disk and press any key“.
It works if i leave only old hard drive, removing the new SSD, the Windows boots well.

The boot option screen can detect old MacOS, new MacOS and the partition with Windows on old HD.

The primary OS is on SSD /dev/disk0 and the Windows in on HD /dev/disk1s4.

$ diskutil list
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *500.1 GB   disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:                  Apple_HFS Macintosh HD SSD        499.2 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

/dev/disk1 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *750.2 GB   disk1
   1:                        EFI EFI                     209.7 MB   disk1s1
   2:                  Apple_HFS Macintosh HD            599.3 GB   disk1s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk1s3
   4:       Microsoft Basic Data                         150.0 GB   disk1s4

$ sudo fdisk /dev/disk0
Disk: /dev/disk0    geometry: 60801/255/63 (976773168 sectors)
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec (     start -       size)
------------------------------------------------------------------------
 1: EE 1023 254  63 - 1023 254  63 (         1 -  976773166) <Unknown ID>
 2: 00    0   0   0 -    0   0   0 (         0 -          0) unused      
 3: 00    0   0   0 -    0   0   0 (         0 -          0) unused      
 4: 00    0   0   0 -    0   0   0 (         0 -          0) unused      
$ sudo fdisk /dev/disk1
Disk: /dev/disk1    geometry: 91201/255/63 (1465149168 sectors)
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec (     start -       size)
------------------------------------------------------------------------
 1: EE 1023 254  63 - 1023 254  63 (         1 -     409639) <Unknown ID>
 2: AF 1023 254  63 - 1023 254  63 (    409640 - 1170501216) HFS+        
 3: AB 1023 254  63 - 1023 254  63 (1170910856 -    1269536) Darwin Boot 
*4: 07 1023 254  63 - 1023 254  63 (1172180992 -  292966400) HPFS/QNX/AUX

Mac OS: Sierra, 10.12.6
HW: MacBookPro Mid 2012

I’ve read tons of similar topics, but unfortunately wasn’t able to figure out the fix.
I really hope someone can advise.

Thank You.

partition – How to run bootcamp when os is on external ssd?

Apple doesn’t officially support installing Windows via Bootcamp on an external device. Therefore you will have to go a different route, but it can be done. The following methods only work if you have another external drive!

There are many guides online, I used this article.
With this guide however, I know that you can’t install it on a partitioned drive since WinToUsb needs to reformat the whole drive, not a partition.

The main steps would be:

  1. Download the windows support software with the Bootcamp app (open it, hit “action” and then download) and install them onto a pen drive (this includes the drivers, etc. for your mouse, keyboard,… to work under Windows)
  2. Format your external drive as GUID-partition map and MS-DOS(FAT)
  3. Install a virtual machine running Windows (e.g. using virtual box), install WinToUsb there and install Windows to the external drive there
  4. Boot into the Windows installer and finally install the drivers.

You could also follow this guide, however, as it needs to be in Master Boot Record, you won’t be able to use it on your current external drive either.

The main steps from that guide are:

  1. Prepare your drive/partition (format it as Master Boot Record and MS-DOS(FAT)
  2. Download the Windows support software with the Bootcamp app (open it, hit “action” and then download) and install them onto a pen drive (this includes the drivers, etc. for your mouse, keyboard,… to work under Windows)
  3. Use virtual box to install the Windows on the external drive
  4. Reboot your machine to windows and install the drivers.

How to fix partition table after resizing bootcamp, MacOS disappear

I have an issue accessing my MacOS data, can someone guide me how to fix this?
I tried to increase the BOOTCAMP using MiniTool Partition Wizard.
After that both MacOS and Bootcamp Windows disappear from the boot menu (Power on then press Option).
Now I have to use a temporary MacOS on my extend SSD. But still can’t access the data from the main MacOS.
Do you have any idea on how to fix this, if I can use my MacOS and Windows as before that is great, but in case it is difficult at least can I access to MacOS disk to just copy some important data?
I saw some post to fix this by adjusting the “hex” but I don’t quite understand that, and it seems suitable for different case depending on different partition table, therefore I can’t just apply blindly as my partition table is different with others.
Below is my “diskutil list”:

  • 300GB which is my main MacOS (I need to access its data)
  • 69.4 GB is my Bootcamp Windows
  • 100 GB storage disk of my Mac data (the only one I can access now)
  • The rest are there by the system.

Please assist to guide me how to fix this if you know. Appreciate.
Thank you.

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Mac Mini 6,1 Stuck with windows bootcamp

I have a mac mini from 2011/2012, model is 6,1. I have not used it in a while and I wanted to wipe it and install linux on it. The problem is that it only boots into windows now and the OSX partition seems to be corrupted. I have tried to boot into the disk partition or recovery mode via internet but they both just leave me at a blank screen. I tried the following things on boot to try and boot into some form of BIOS or recovery mode.

  1. Hold Option Key
  2. Hold Down Power Button
  3. Commad + R
  4. Option + R

I am not sure what else to try other than pulling out the disk and formatting it externally but even then how would I do it so I can only have Ubuntu or some flavor of Linux on there?

Please let me know if anyone had this issue or is able to figure it out.

Thanks

mac pro – Trying to Run Windows 10 on Flashed Mac Pro 4, 1 now 5, 1 Bootable USB Storage Error Bootcamp

mac pro – Trying to Run Windows 10 on Flashed Mac Pro 4, 1 now 5, 1 Bootable USB Storage Error Bootcamp – Ask Different

bootcamp – No TP 2.0 Exposed My Bookcamp System: Blocking Windows 11 Upgrade

Damn secure enclave you can’t emulate this $60 add-on chip, for PowerEder models.

So in other words Widows 10 version next will-continue to get updates? Or did at that stop when this stupid incorrect came. It’s ny number but JUST CALL IT WINDOWS.

In short, no more boot camping bleeding that sucker batterie an AMD old non-integrate sucking heatswap it 80% charge, were is shall stay, until OEL I get intel anomaly

Sorry bilnd people

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