boot – Is there any way to restore / rebuild EFI without using a Windows bootable DVD?

I’ve got a frustrating problem with some old hardware. Due to some awfully designed firmware which hasn’t had a new release since 2016, I can’t boot from a USB stick containing an ISO 9660 filesystem (or similar). The firmware will only accept that on physical DVD.

I’ve tried converting the Windows image into FAT32, but there’s a file greater than 4GB so it won’t fit on FAT32.

To make matters worse I don’t have a dual-layer DVD burner and MS Windows ISOs are larger than single layer DVDs.

All I’m actually trying to achieve is to restore the boot loader into EFI which accidentally got deleted by a dual boot OS.

I have both Linux and Mac machines available. I don’t have a spare Windows PC.

Just incase someone has seen similar hardware its an Aspire E5-573 Part Number NX.MVJEK.016

Is there any possible way to restore the EFI boot loader without using a bootable drive.

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