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Legacy ISA device probing involves poking at various I/O addresses to guess whether or not a particular device is present. Actual legacy ISA cards are essentially nonexistent by now, but the probed I/O addresses have a habit of being reused for various OEM-specific functions. This can cause some very undesirable side effects. For example, probing for the "ne2k_isa" driver on an HP Elitebook 840 G10 will cause the system to lock up in a way that requires two cold reboots to recover. Enable ISA_PROBE_ONLY in config/isa.h by default. This limits ISA probing to use only the addresses specified in ISA_PROBE_ADDRS, which is empty by default, and so effectively disables ISA probing. The vanishingly small number of users who require ISA probing can simply adjust this configuration in config/local/isa.h. Signed-off-by: Michael Brown <mcb30@ipxe.org>
iPXE README File Quick start guide: cd src make For any more detailed instructions, see http://ipxe.org