Man, this brings back memories of a few years ago when I tried to dd a Linux install image on a usb drive. It would take forever and always end up with an i/o

Man, this brings back memories of a few years ago when I tried to dd a Linux install image on a usb drive. It would take forever and always end up with an i/o error. I figured the new PC had somehow wonky usb ports or something. But when that happened on another "known good" box, I figured it was the flash drive. But Disk Utility in MacOS worked well. Then I tried increasing the block size to 1M and everything went smoothly. It even took less time to write the whole image correctly than it took it to error out before.