I have a Windows 10 ISO that is 5.3 GB. The Boot Camp disk image that Boot Camp Assistant downloads is 2.8 GB. Together these are more than 8 GB.
Boot Camp Assistant creates a partition named OSXRESERVED of 8 GB that (I think) serves as the the Windows installation medium.
Boot Camp Assistant first copies the contents of the Windows 10 ISO to the OSXRESERVED partition. Then it copies the contents of the Boot Camp disk image to the OSXRESERVED partition. It then does an unattended install of Windows 10 and the drivers required for my MacBook Pro.
(Please correct me if I'm wrong.)
The problem is that 8 GB is not enough space. So Boot Camp Assistant gives the following error:
The Windows support software could not be saved to the selected drive. There is not enough space available on the disk.
Is it possible to either:
- A) resize the OSXRESERVED partition (taking some space from either the BOOTCAMP partition or the APFS container partition)
- or B) tweak a 'OSXRESERVED partition size' setting in macOS that is used by Boot Camp Assistant and run it again?
distil info OSXRESERVED:
Device Identifier: disk0s3 Device Node: /dev/disk0s3 Whole: No Part of Whole: disk0 Volume Name: OSXRESERVED Mounted: Yes Mount Point: /Volumes/OSXRESERVED Partition Type: Microsoft Basic Data File System Personality: ExFAT Type (Bundle): exfat Name (User Visible): ExFAT OS Can Be Installed: No Media Type: Generic Protocol: PCI SMART Status: Verified Volume UUID: C6464CB1-7861-398E-93D4-06D988D784FC Disk / Partition UUID: A558AF49-0824-425E-B120-CFB50ADC2053 Partition Offset: 178210734080 Bytes (348067840 512-Byte-Device-Blocks) Disk Size: 8.0 GB (7998537728 Bytes) (exactly 15622144 512-Byte-Units) Device Block Size: 512 Bytes Volume Total Space: 8.0 GB (7996440576 Bytes) (exactly 15618048 512-Byte-Units) Volume Used Space: 5.3 GB (5298814976 Bytes) (exactly 10349248 512-Byte-Units) (66.3%) Volume Free Space: 2.7 GB (2697625600 Bytes) (exactly 5268800 512-Byte-Units) (33.7%) Allocation Block Size: 32768 Bytes Read-Only Media: No Read-Only Volume: No Device Location: Internal Removable Media: Fixed Solid State: Yes Hardware AES Support: No