I can't copy the ISO file (4 GB) into a 16 GB SD Card
MacBook Air, macOS High Sierra (10.13.3)
Doesn't matter. If it's formatted as FAT32, the file structure itself cannot hold a copy of any file that is larger than 4 GB, minus 1 byte. In order to copy your file to the drive, it will either have to be NTFS (which you can't format as, or write to from a Mac without a third party add-on), or ExFAT.
What is the size of install.wim in the Windows ISO? If the SD card is FAT/MBR, a file larger than 4GB will not be copied.
Is the SD card formatted as FAT/MBR? Unformatted SD card will also cause a problem.
Formatted as FAT/MBR, there's one specific folder from the Windows 10 installer ISO, called "sources" which says it is "too large for the disk's format" and the whole copy process fails then
You can format the drive as ExFAT using Disk Utility on your Mac.
If you are using High Sierra, it is a known issue.
See
3.2GB file "Too large" for FAT32? | MacRumors Forums
as a reference.
The incorrect integer size was used. It works properly in older versions of macOS. 2**32 -1 is 4294967295 bytes. Both these files should fit on a FAT/MBR file system/device.
The Windows ISO is 3.99 GB the SD card is empty and it is 16 GB
I understand, anyway the SD Card is 16 GB free
So? How can I make that format? using a PC?
It's likely bigger than 3.99 GB. Apple caved a few versions of the OS back and started using the incorrect base 10 system to report sizes. Computers only understand base 2 - binary. On/off. 1/0. But base 10 produces easier, rounded off numbers, even though they're wrong. So, that 3.99 GB file is actually something like 4.2 GB, which is why it won't copy to a FAT32 drive.
create a windows 10 usb bootable flash drive on mac os high sierra
