I inherited a Toshiba laptop with a failed HDD. This has Windows10 installed on it, but seems to be unrepairable, although I can boot from a Ubuntu 16.04 USB.
I want to try and resurrect it, and have downloaded
Win10_1709_EnglishInternational_x64.iso and attempted to make a bootable USB.
I tried (on macOS)
hdiutil convert -format UDRW as suggested in one post and used
dd to write to USB, and this looks OK. The original image appears to be UDF format.
I tried formatting the USB as FAT32, but could not copy the contents of the disk (as one directory was too big).
I tried formatting the USB as EXFAT, copied the contents of the disk, but this failed to boot.
There are a few tutorials which suggest
bootcamp to create a bootable USB, but this doesn't seem to be possible on High Sierra.
Can anyone suggest a method of making a Windows 10 install USB on Ubuntu 16.04 or macOS 10.13
I seem to be caught in a Catch22 situation. I need
EFI on a
FAT partition (but apparently not ExFAT) to boot.
Unfortunately I cannot copy Windows to FAT32 because one of the files is too large.
Other bootable USB seem to have a small EFI partition with a system in another, but I am at a loss how to achieve this.
EDIT 2 I tried a new approach.
I created a 500mB FAT32 partition and set the
esp flags, and copied the
efi directory from the Windows install disk.
I copied the contents of Windows install disk to a
This appeared to help, resulted in errors"-
"Your PC/Device needs to be repaired … You'll need to use recovery tools"