Questions tagged [partition]
Creating a new disk formatting scheme or altering an existing scheme
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No partition scheme option when erasing a USB disk in MacOS High Sierra?
In previous versions of MacOS, I recall that Disk Utility provided an option to select the partition scheme (GUID, MBR, or Apple).
If I formatted the USB key without changing the scheme to MBR, I ...
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Mount Ext4 on El Capitan
I recently installed OS X 10.11 on my Mac.
I tried to read a SD card with an Ext4 partition which wasn't even shown in Disk Utility, although diskutil did show it as a Linux partition.
I can't seem ...
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Resizing or expanding a CoreStorage volume
I bought a new SSD with 750 GB and made two partitions: 600 GB and 150 GB. The smaller one was thought to be a Bootcamp partition one day, but to date it was just another unused partition. When I ...
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How to resolve error: "Couldn't modify partition map because file system verification failed"?
I upgraded to Lion and decided I no longer want 100 GB of my drive devoted to Boot Camp, I never boot into Windows, I just use it as a VM anyways. So I deleted the boot camp partition using disk ...
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Unable to Resize Partitions
I have recently created a partition on my macbook air running OS X 10.9, and this was to run install another OS instance (Yes, OS X 10.10 Yosemite, but that is an aside to the query I have) on it.
I ...
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Can't reformat SD card (Yosemite)
I have a 2 GB SD card that I can't reformat. It seems pretty corrupted.
If I go into Disk Utility, I get these various error messages for each option:
Repair Disk:
Disk Utility can’t repair this ...
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Mac OS Sierra - Disk Utility will not let me partition an external hard drive
Within disk utility, the partition icon is grayed out. If I mouse over it, it reads: "Disks with Master Boot Record Partition Maps cannot be partitioned". The history on this drive: It is a 2 TB ...
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How can I merge primary APFS partition with other empty APFS partition?
Using the latest Macbook Pro with currently High Sierra 10.13.1, I was using bootcamp for a year, and I decided to get rid of the Bootcamp partition this morning. The Bootcamp utility would not let me ...
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How to fix broken EFI partition?
I have an iMac running OSX Lion. I also installed bootcamp and Windows 7. During the install of Windows 7 I wasn't paying complete attention and deleted and formatted the EFI partition.
I didn't ...
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How to remove partition on SD card using a Mac?
I got Raspbian on a SD card, and then accidentally wiped it. Now I have 2 visible partition. How do I get rid of the partition on a Mac.
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OS X can't unmount disk
My 1TB LaCie Rugged THB decided it was a good idea to stop working all of a sudden.
If I open it in disk util I sometimes see an actual name of a partition, but most likely it's not the real name.
In ...
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Macbook Air + Lion + Windows 7 Boot Camp + shared partition
I would like to setup my Macbook Air's disk drive with 3 partitions - 50Gb for OSX Lion, 50Gb for Windows 7, and the remaining 150Gb for Data to share between both OSes (music, photos etc).
What's ...
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Bootcamp: The startup disk does not have enough space to be partitioned
When clicking continue on the first Boot Camp screen, I am presented with a dialog that displays:
The startup disk does not have enough space to be partitioned.
You must have at least 39 GB of ...
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Data Not Backed Up, Partition Type: FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF
I was trying to install Linux on my MacBook for class when I bricked my computer, which now in an unbootable state.
I made my partition too small, so I was going to delete and create a larger one. ...
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How can I triple boot MacOS Catalina , Ubuntu 18.04, and Windows 10
I currently use the mid-2014 MacBook Pro.
I have read the similar questions asked but as I don't have much technical knowledge I thought I should create a new question.
Device History
I had ...
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What is the 'Mac OS X Base System' disk image on my 2011 MacBook AIr?
On my 2011 MacBook Air with Mac OS X Lion, I boot into Recovery mode via holding the command-R key during startup, if I go into Terminal and do a diskutil list, I get a list of 12(!) logical disks. ...
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Remove "Windows" Entry from Mac Boot Loader
Background
A while back, I installed Windows 8 on my MacBook Air (mid 2013 model) using Bootcamp. It never really worked, (it would freeze all the time, the WiFi would cut in and out, etc.) so I got ...
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Can't resize APFS Container: Not enough free space in Container due to APFS limits or tidemarks
When I try to resize my APFS container, I get the following error:
Error: -69531: There is not enough free space in the APFS Container for this
operation due to APFS limits or APFS tidemarks (perhaps ...
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Create new partition in unallocated space with diskutil
I have deleted the first partition on my external HD such that it now has 100GB of free space at the beginning of the partition. I'd like to reclaim that space, but Disk Utility doesn't let me create ...
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Is it possible to install and boot Windows on a Thunderbolt drive?
I know the BIOS emulation of the EFI firmware in Macs does not support booting from FireWire or USB drives, and the EFI version of Windows doesn't seem to be compatible with Apple's EFI implementation,...
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What is Macintosh HD - Data - Data?
I just formatted my Macbook Pro. Using macOS Catalina 10.15.4
At boot, I pressed Cmd+R to enter recovery. I then used the disk utils to erase the "Machintosh HD - Data" partition.
I then went over ...
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Reclaim deleted partition now Free Space after Yosemite removal
I've installed Yosemite in a second partition. Once I decided to remove Yosemite and go back to Mavericks, I am not able to claim the free space partition in the Disk Utility. How can I reclaim this ...
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Choice of Scheme when formatting USB flash drive in macOS
When using Disk Utility 16.3 with macOS Sierra to format a "thumbdrive" USB 3 Lexar flash drive (64 gigs), when I choose a Format of ‘Mac OS Extended (Journaled)’, I get a list of three Scheme items:
...
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Can you make OSX mount just certain partitions when you connect an external HDD?
I have an external HDD with 4 partitions.
My question is the following: is there a way of telling the OS to mount just two of them (One FAT and one HFS+) when I connect the HDD? It is rather annoying ...
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Mount FAT32 partition (external drive) on Mac
I have an external disk drive of 2TB with two partitions, one NTFS and another with FAT32 format.
The NTFS partition is automatically mounted when i plug the device using Paragon NTFS but I don't ...
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Disk Utility Cannot erase USB Drive (Error: -69877: Couldn't open device)
I have a PNY 128gb flash drive that I can no longer modify (can't delete files). I've tried to reformat it using Disk Utility but I get the following message and my usb is unmounted:
I've followed ...
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I deleted my Bootcamp partition but can't resize my OS X partition
I didn't realize this would cause issues, but I used Disk Utility to delete my Bootcamp partition and then tried to resize my main partition to fill the disk. This causes an error and I searched for ...
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How can I change the title of a boot image?
I have an external Hard Drive with two bootable partitions on it. The first is an image of a Mac OS X 10.6 Install DVD, and the second is an image of a Mac OS X 10.6.3 Install DVD.
When I plug the ...
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How can I use NTFS partitions in OS X?
My coworkers use NTFS partitions, and I can't share my data with them, as NTFS on Mac OS X is read-only.
How can I read and write onto NTFS partitions?
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OS volume shows as type 'FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF'
Yesterday, I have tried to delete an Ubuntu partition. Since, my Mac (13", MBPro mid-2014) doesn't boot. Now, I boot on Mac OS copy with an USB.
i follow different subject of this forum (like this : ...
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200GB unused, but can't change APFS container size due to minimum requirement
I want to create a partition with a different filesystem but in order to do that I need to resize my APFS container.
This container has 292,4 GB used space. Its minimum size is 500,07 GB.
This ...
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Install 2 different OS X versions on the same machine/hdd
OK, here's my situation :
I am a developer needing to debug under different OS X versions
I currently own 2 macs : a MacBook Pro and an iMac
the iMac has Snow Leopard (10.6) on it - it came pre-...
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How to install Windows 10 into a 2011 iMac without using the Boot Camp Assistant, an optical (DVD) drive or third party tools?
Note the following regarding user TAbdiukov's question which has a links to this question.
This question is about installing Windows 10 on 2011 iMac to achieve a macOS High Sierra / Windows 10 dual ...
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How can I delete a partition (coreStorage logical volume?) from the Terminal?
I finally understood why Disk Utility will not change the partitions on my HDD, even though I added the most recent one myself (maybe significant: to test Yosemite DP) with it. Now I see it says it ...
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Is there a safe way to move the /Users folder to a separate volume/drive?
I have an SSD on the way and will be moving my HDD to the optical bay slot in my MBP. I want to boot from the SSD and store my /Users folder on the HDD. I've seen the way that everyone suggest ...
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How do I format a disk partition from the command line on OS X?
How do I format a disk partition from the command line on Mac OS X?
In case someone wonders why: because for some people Disk Utility fails.
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Can I resize a BootCamp partition without reinstalling Windows?
Does any one know how to do this?
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How to create a FAT16 partition on an SD card with OS X El Capitan?
I want to prepare an SD card for use in an old camera using CHDK. The card needs to be FAT16 formatted. This doesn’t work from Terminal anymore, maybe already for years. Disk Utility provides ''FAT'', ...
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How do I delete a BootCamp partition using Terminal's diskutil?
For some reason, the BootCamp Assistant app won't let me delete my BootCamp partition. How can I do so using Terminal and the diskutil terminal app?
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Can't ever remove partition?
Running Mountain Lion.
I added a partition with Disk Utility and then had second thoughts about it. I'd like to remove the partition i created, MacSSD2 and hand over its space back to MacSSD. As you ...
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Bypassing Boot Camp to install Windows using a non-standard partition scheme
My new Retina MacBook Pro is on its way, giving me time to contemplate setting it up. Good thing I got started—I had no idea how difficult it was going to be to install Windows and create an auxiliary ...
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Cannot resize APFS partition - “The new size must be different than the existing size”
I'm trying to use entire 1TB HD as 1 drive. Using the disk utility to resize the disk to 1TB I keep getting "The New size must be different than the existing size".
I tried using the apple disk ...
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Can't resize partition on VMWare Mac
I have a mac running in a virtual machine and I expanded the hard drive in the settings, however when I go to resize the partition in the guest OS, it does not let me. There is only one partition now, ...
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Missing Yosemite Recovery Partition
After doing a standard, App Store upgrade of Yosemite it seems that the recovery partition is still Mavericks-specific. Whether I hold Cmd+R or Option and select the recovery partition it takes me to ...
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How can I resize a partition with Disk Utility?
I have 2 partitions, I reduced the size of one and want to expand the other to fill the now available space.
How do I expand the Lion Partition into the empty grey space beneath Macintosh HD ...
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Can the data on an MacBook Pro SSD be recovered after formatting using Disk Utility
My MacBook Pro is going to a new owner and I want to be certain the data is adequately erased on the internal SSD (PCIe flash). There are two Stack Exchange questions/answers that appear to present ...
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Can't create partition on free space with Disk Utility [duplicate]
I have created new partition by selecting free space option and now I can't merge it or recreate it.
I have tried to use iPartition to create a new partition on free space but it said I have no ...
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How do I pass the following error message in the Boot Camp Assistant: "Please format the USB drive as single FAT partition."?
I am running the Boot Camp Assistant on El Capitan. Whenever I reach the third screen, titled "Save Windows Support Software", on which I can select an storage medium to save the Windows support ...
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How to create a second partition on an external disk and is it safe?
I want to create a second a partition in my hard disk where one (about 900 GB) is used for Time Machine and another (100 GB) is used to store info like a thumb drive.
I don't want any existing data ...
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I think I messed up the Fusion Drive on my 1TB iMac (with BootCamp)
this is a somewhat similar post to this one (Can't create partition on free space with Disk Utility) but not quite...
It started with me creating a BootCamp partition (around 145 GB) for Windows ...
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