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I'm trying to generate a custom bootable Windows 10 ISO using the command prompt (it needs to be automatable so GUI won't work). I've been trying to use mkisofs but not sure which options are needed for bootable Windows 10. I've tried from the directory containing the Windows files:

mkisofs -no-emul-boot -b boot/etfsboot.com -boot-load-seg 0x07C0 -boot-load-size 8 -udf -joliet-long -D -N -relaxed-filenames -allow-limited-size -l -J -r -iso-level 3 -o win1809v2auto.iso .

But the result won't start in VMware Workstation. Does anyone know what the correct flags are that I need?

Similar (what got me this far):

How to create bootable Windows 8 iso image in Linux?

How to Create Bootable Windows 10 image in Debian?

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    In my experience, the overall process seems to be quite error prone. Are you positively sure you need an ISO? Would a bootable virtual drive be sufficient? – Hermann Jun 17 at 14:03
  • Thanks for the suggestion Hermann but I'm actually only using VMware to test. I actually have a handy little USB HDD/SSD adapter that you can fill with ISOs and then it presents them as virtual CDs. So that's ultimately where it needs to end up. – Sam Jun 17 at 14:06
  • what device are you referring to? – jsotola Jun 17 at 16:10
  • @jsotola It's an iodd, I think a 2531. – Sam Jun 18 at 7:15

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