Hi,
i have got a Macbook Air 128gb. I was having bootcamp partition in it. Yesterday i tried to erase the partition, the partition was about 36gb and it got erased and merged with the mac partition, but it didn't erased completely and 3gb of the bootcamp partition is still there and it is in the format of ISO 9660 (Joilet) and i am unable to erase it. It shows some kind of error. Now how can i erase it completely?
MacBook Air, macOS Mojave (10.14)
Erasing the Windows partition using Disk Utility does not properly cleanup files in other locations. You have a Microsoft directory in the EFI Partition that you need to remove. If you need detailed instructions, please ask.
Run
diskutil repairDisk disk0
which should rebuild your EFI partition again, without the Windows issue.
Run
diskutil mount disk0s1
and check for a Microsoft directory in the EFI volume in Finder.
Please, your help would be really appreciated. as i will be partitioning and installing windows again, i don't want this to take even a single byte and be seen as a third disk on bootup.
and for your reference, i tried terminal diskutil to cleanup the disk but it was also showing errors and failed to do so and today when i checked it, it was gone so i checked the disks from boot menu and their i saw that windows disk, so please if you can help, i would really appreciate it
as it is showing up as a volume, i used the diskutil repairVolume and i successfully erased the disk0s1. and now its also not been showing up in preboot menu.
as it is erased, now i am happy. and thank you so much as you were really so much helpful to me.
one last thing, do you know how the bootcamp disk that was taking 2gigs of space got erased automatically? if you know, please explain. It would be really good to get some knowledge from the experts like you.
You mean to say that now i cannot partition my disk again? i erased that EFI volume because when i saw the preboot menu there was a disk naming Windows (Windows partition was named as Bootcamp) i tried to boot it up, it showed up the error to use a windows installation disk to repair it. Then i booted up with mac and tried to mount the Bootcamp disk, but it was not available there and then i followed your instruction to check the diskutil list, then i got to know that the bootcamp disk got erased automatically and there is just a EFI volume taking 230MB so then i erased it thinking of it as useless.
i don't know what happened to my mac, but i cannot see the boot camp disk now
when i tried to mount it, it failed.
Nishu.nalwaya wrote:
as it is erased, now i am happy. and thank you so much as you were really so much helpful to me.
You first had a pothole, now you have a dug a well to fall into. You must not delete disk0s1 (EFI). It causes many issues.
Nishu.nalwaya wrote:
one last thing, do you know how the bootcamp disk that was taking 2gigs of space got erased automatically? if you know, please explain. It would be really good to get some knowledge from the experts like you.
If there is no BC partition, it should not take up any space. OSXRESERVED takes up 8GB, but is deleted after a successful installation. Erasing EFI is where you seem to have 'gained' disk space, but it is not valid. Your future partitioning of the disk is now broken. I suggest you backup macOS, erase the whole disk and restore it. Leave the EFI partition alone.
Post the output of
diskutil list
from macOS Terminal.
but i can see the windows disk when booting up and it needs recovery.
Can you post the output of
diskutil repairDisk disk0
How do i reset bootcamp partition completely?
