format usb drive exfat to fat32 windows 10

Unfortunately I cannot copy Windows to FAT32 because one of the files is too large. I need EFI on a FAT partition (but apparently not ExFAT) to boot. I seem to be caught in a Catch22 situation. There are a few tutorials which suggest bootcamp to create a bootable USB, but this doesn't seem to be possible on High Sierra.Ĭan anyone suggest a method of making a Windows 10 install USB on Ubuntu 16.04 or macOS 10.13

I tried formatting the USB as EXFAT, copied the contents of the disk, but this failed to boot. I tried formatting the USB as FAT32, but could not copy the contents of the disk (as one directory was too big). The original image appears to be UDF format. I tried (on macOS) hdiutil convert -format UDRW as suggested in one post and used dd to write to USB, and this looks OK.

I want to try and resurrect it, and have downloaded Win10_1709_EnglishInternational_圆4.iso and attempted to make a bootable USB. This has Windows10 installed on it, but seems to be unrepairable, although I can boot from a Ubuntu 16.04 USB. I inherited a Toshiba laptop with a failed HDD.

Format usb drive exfat to fat32 windows 10