ISO: Kali Linux Light 2018.3 i386 (32 bit)
When booting from USB the installer starts (live works) but then prompts for the CD with the error “can’t mount and detect CD-ROM drives”
If using Rufus to burn the ISO to USB drive make sure the option is “DD Image” in “Create a bootable disk using” not ISO.
There are other workarounds.
1) Run the installer
2) Open a shell ALT + F2
3) Create the directory cdrom directly in the root of the file system mkdir cdrom
4) Mount the USB as if it’s a CD mount -t vfat /dev/sdb1 /cdrom
5) Switch back to the installer ALT + F1
Run blkid to get a list of devices if sdb1 doesn’t correspond to the USB.