[comp.arch] Read Only Root FS

mitch@stride1.UUCP (Thomas P. Mitchell) (01/13/88)

In article <703@mplvax.nosc.MIL> cdl@mplvax.nosc.mil.UUCP (Carl Lowenstein) writes:
>In article <17309@topaz.rutgers.edu> ron@topaz.rutgers.edu (Ron Natalie) writes:
>>CD ROM roots would be bad because CD ROM's are blindingly slow.
>
>Yes, but all you really want to do is reload the fast-disk root file system
>from the CD ROM once in a while, like when you re-boot everything.
>

One might consider placing the root FS in a demand paged area of
memory (AKA RAM DISK) which demand loads from the CD.  Then swap
pages out to a faster real disk for speedy recall.  With a large
enough virtual address space one could get rather clever even
with modest real memory.



Thomas P. Mitchell (mitch@stride1.Stride.COM)
Phone:	(702) 322-6868 TWX:	910-395-6073
MicroSage Computer Systems Inc. a Division of Stride Micro.
Opinions expressed are probably mine.