[linux-lvm] Recovering from a disaster...
andewid at tnonline.net
Sat Dec 7 03:45:02 UTC 2002
>> Ahem, to fuss a bit, the BIOS is a lodestone that comes with the *PC*
> And to fuss a bit more, "the BIOS" is an outdated term. Most systems do
> not have a single "BIOS" anymore; they have multiple components, each with
> their own "BIOS". These various "BIOSes" are just firmware; they contain
> what is needed to run the device and bootstrap the OS (plus a ton of legacy
> code leftover from the days of MS-DOS and floppy-only systems).
>> Someday we'll even see PC-class machines without a BIOS.
> Perhaps I misunderstand, but how does one boot without a BIOS?
Well, The only thing needed is firmware for various devices that have
the capability to load the OS from some form of media - either over
LAN/Internet, disks, floppy, CD, ROM, etc etc..
Todays BIOS are often around 256KB with lots of old legacy code for
DOS based systems. Most of it is also 16 bit code.
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