c42cb97f08
iPXE adds Simple File System Protocol to loaded image handle, as side effect it also adds Block IO protocol (according to comments, to work around some bugs in EDK2). GRUB assumes that every device with Block IO is disk and skips network initialization entirely. But iPXE Block IO implementation is just a stub which always fails for every operation so cannot be used. Attempt to detect and skip such devices. We are using media ID which iPXE sets to "iPXE" and block IO size in hope that no real device would announce 1B block ... Closes: 50518
This is GRUB 2, the second version of the GRand Unified Bootloader. GRUB 2 is rewritten from scratch to make GNU GRUB cleaner, safer, more robust, more powerful, and more portable. See the file NEWS for a description of recent changes to GRUB 2. See the file INSTALL for instructions on how to build and install the GRUB 2 data and program files. Please visit the official web page of GRUB 2, for more information. The URL is <http://www.gnu.org/software/grub/grub.html>. More extensive documentation is available in the Info manual, accessible using 'info grub' after building and installing GRUB 2. There are a number of important user-visible differences from the first version of GRUB, now known as GRUB Legacy. For a summary, please see: info grub Introduction 'Changes from GRUB Legacy'