I am attempting to set up bootcamp for my 2013 MacBook. I have a 16gb USB for the Windows ISO. The USB was formatted in MS-DOS (FAT32). I need just MS-DOS for bootcamp. I attempted to switch it using Disk Utility but when i erase and select MS-DOS it just erases and reverts back to (FAT32)? any way how to fix this?
MacOS – MS-DOS (FAT32) USB to MS-DOS
disk-utilitymacos
Related Solutions
Your internal disk is set up as a CoreStorage Volume Group. You can't easily expand it with Disk Utility booted from the internal main volume. To modify it you have to boot to Internet Recovery Mode or to an external boot drive.
Preparation:
- Backup your data.
- Detach any external drive (especially your external Time Machine backup drive).
Restart to Internet Recovery Mode by pressing alt cmd R at startup.
The prerequisites are the latest firmware update installed, either ethernet or WLAN (WPA/WPA2) and a router with DHCP activated.
On a 50 Mbps-line it takes about 4 min (presenting a small animated globe) to boot to a recovery netboot image which usually is loaded from an apple/akamai server.I recommend ethernet because it's more reliable. If you are restricted to WIFI and the boot process fails, just restart your Mac until you succeed booting.
Alternatively you may start from a bootable installer thumb drive (Mavericks or Yosemite) or a thumb drive containing a full system (Mavericks or Yosemite).
Modify CoreStorage stack:
- Open in the menubar Utilities/Terminal
First you should get an overview of your disks and the partition layout:
Enter
diskutil list
Example listing:/dev/disk0 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *500.3 GB disk0 1: EFI EFI 209.7 MB disk0s1 2: Apple_CoreStorage 449.4 GB disk0s2 3: Apple_Boot Recovery HD 650.0 MB disk0s3 4: EFI No Name EFI 100.0 MB disk0s4 /dev/disk1 #: TYPE NAME SIZE IDENTIFIER 0: Apple_partition_scheme *1.3 GB disk1 1: Apple_partition_map 30.7 KB disk1s1 2: Apple_HFS OS X Base System *1.3 GB disk1s2 /dev/disk2 #: TYPE NAME SIZE IDENTIFIER 0: Apple_HFS Macintosh HD *449.0 GB disk2 Logical Volume on disk0s2 7527240B-2663-4F9F-8803-B602F828E193 Unencrypted /dev/disk3-disk12 ...belong to the OS X Base System (your recovery system you booted to previously)Disk0 is your main internal disk device containing the EFI-partition (dis0s1), the CoreStorage partition (disk0s2) and the Recovery HD (disk0s3).
Disk1 is a logical disk created by booting to the netboot image which contains a recovery system (OS X Base System = disk1s2) similar to the Recovery HD.
Disk2 is also a logical disk residing in disk0s2 and it contains the CoreStorage stack.
Enter
gpt -r -vv show /dev/disk0
Example listing:sudo gpt -r show /dev/disk0 start size index contents 0 1 PMBR 1 1 Pri GPT header 2 32 Pri GPT table 34 6 40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B 409640 877662072 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC 878071712 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC 879341248 97763779 977105027 32 Sec GPT table 977105059 1 Sec GPT headerEnter
diskutil cs list
Example listing:CoreStorage logical volume groups (1 found) | +-- Logical Volume Group A629E051-D7B0-4B8C-A803-074F62704636 ========================================================= Name: System Status: Online Size: 449362980864 B (449.0 GB) Free Space: 16777216 B (16.8 MB) | +-< Physical Volume 90C09FC0-4215-4871-901B-70E2C9C7D464 | ---------------------------------------------------- | Index: 0 | Disk: disk0s2 | Status: Online | Size: 449362980864 B (449.0 GB) | +-> Logical Volume Family F6962E38-50E4-4458-BFE6-CF2E179352F5 ---------------------------------------------------------- Encryption Status: Unlocked Encryption Type: None Conversion Status: NoConversion Conversion Direction: -none- Has Encrypted Extents: No Fully Secure: No Passphrase Required: No | +-> Logical Volume 7527240B-2663-4F9F-8803-B602F828E193 --------------------------------------------------- Disk: disk2 Status: Online Size (Total): 4488010800 B (448.8 GB ) Conversion Progress: -none- Revertible: Yes (no decryption required) LV Name: System Volume Name: System Content Hint: Apple_HFSYou don't have a blocking No Name EFI (disk0s4) which usually is created while installing Windows with the Boot Camp Assistant - even if the install fails.
You may now immediately resize the CoreStorage volume with
diskutil cs resizeStack LVUUID sizewith LVUUID: UUID of the logical volume and size: the final size of your CoreStorage volume.
Examples:diskutil cs resizeStack 7527240B-2663-4F9F-8803-B602F828E193 475gto expand it to 475 GB
diskutil cs resizeStack 7527240B-2663-4F9F-8803-B602F828E193 0gto expand it to the full available size (0g is a magic number here).
Your Recovery HD should be moved automatically.
Quit Terminal by entering
exitand open Disk Utility.- Check the superior Logical Volume Group (Macintosh HD) and the Logical Volume (the ingferior Macintosh HD) for errors.
- Reboot your Mac to your main volume.
I think unless you can recover the directory information, you have little chance.
Recovery apps rely on being able to rebuild directory data from fragments, or discern recognisable file patterns in the data. If the data is encrypted, there are no patterns to discern.
I would be happy to be wrong, in this instance.
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Best Answer
For all practical purposes MS-DOS is MS-DOS (FAT32) nowadays, see https://www.howtogeek.com/235596/whats-the-difference-between-fat32-exfat-and-ntfs/ for instance: