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No bootable device after trying to resize my bootcamp partition

Hello,


today I tried to resize my bootcamp partition using this video .. I followed what was said and had no problem until everything was done, at the end when my Mac restarted there was this message on my screen

if you need any more information I’ll try my best to

help, thank you.


[Edited by Moderator]

iPad, iPadOS 17

Posted on Jan 13, 2025 6:50 PM

Reply
3 replies

Jan 13, 2025 7:24 PM in response to Fruitt

nevermind I found a solution, I don’t know how to delete a post lol, if you have the same problem as I did here’s what I did:


while pc is restarting press windows+r then it’ll open some kind of Mac window then click on the apple icon in the upper left corner and find startup disk, then restart from the windows bootcamp file and it should work. If it didn’t…good luck 🍀

Jan 13, 2025 8:15 PM in response to Fruitt

FYI, you cannot resize or modify any partitions after you install Windows on a Mac when you are dual booting macOS & Windows. If you need to resize a partition, then you will need to first delete the Windows Bootcamp installation using Bootcamp Assistant and start over with your Windows Bootcamp installation with the new partition sizes.


Also, most everything Windows related you find online is regarding a dedicated Windows computer and won't apply to using Windows on a Mac.


If your Windows workload can work with Windows installed within a Virtual Machine, then that would be the best way to go since you don't have to worry about getting partitions sizes correct. People almost always find out that one or more partitions are too small.


Make sure to always have frequent and regular backups of both your macOS system and your Windows system as well as all external media (including the cloud) which contains important & unique data.

Jan 13, 2025 8:40 PM in response to Fruitt

Apple's recommended method for resizing Boot Camp partitions is to delete the Windows partition and reinstall.


There are a couple of vendors specializing in file system software that offer tools for resizing Boot Camp Partitions - although this is obviously not supported by Apple should anything go wrong. This includes tools like CamptuneX by Paragon software and similar tools - including generic partitioning software like GParted. Tools like CamptuneX are specifically designed to deal with dual-boot macOS/Windows systems created using Boot Camp (and the partition table that creates) whereas tools like GParted require more expert knowledge to use. They are all "use at own risk".


Random YouTube videos are almost certain to have bad info and should be avoided.

No bootable device after trying to resize my bootcamp partition

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