I found myself in the same condition as you, I managed to solve it by creating a usb-stick using refus to write an .iso image downloaded from the eset site.
These are the options used:
Partition scheme: MBR
Target System: BIOS or Uefi
File system: FAT32
Cluster size: 4096
When asked DD or ISO I chose ISO.
The only problem is that you have to update the virus definitions with every use.
SysRescue Live Does Not Detect Internal Partitions
in ESET Standalone Malware Removal Tools
Posted
I found myself in the same condition as you, I managed to solve it by creating a usb-stick using refus to write an .iso image downloaded from the eset site.
These are the options used:
Partition scheme: MBR
Target System: BIOS or Uefi
File system: FAT32
Cluster size: 4096
When asked DD or ISO I chose ISO.
The only problem is that you have to update the virus definitions with every use.
I hope I was helpful