x86/DOS system backup via rs232?
mouse at Rodents-Montreal.ORG
Thu Nov 12 18:00:57 CST 2015
>> Bring up a liveCD or moral equivalent and run SLIP, then do any of
>> many networked-backup variants?
> Hmm, was SLIP an option for DOS TCP/IP stacks?
I meant for the livecd to be on the usually-running-DOS machine. But
Of course, if you have the ability to add hardware, you might be able
to pop an Ethernet in to the machine. But you specified serial....
> I'm not sure if something with e.g. an 8088 CPU can even come close
> to that - maybe 9600, tops.
Yes, if it's _that_ old, it may be difficult to find a livecd that will
run. Perhaps minix?
It also might be worth investigating to see if any of the [xyz]modem
implementations would be willing to read directly from a disk.
> I'd be expecting several hours of transfer for a typical 20MB
> ST506-type drive,
At 9600, assuming no loss to framing, error detection/correction, and
the like, my arithmetic says 20MB should take a little over 6 hours.
>> Alternatively, maybe move the DOS disk to the other machine and copy
>> it there with dd or moral equivalent?
> For anything modern with IDE or SCSI, sure, but not so easy for
> ST506/ST412/ESDI :(
However, I _think_ some old Sun and MicroVAX machines play in that
space; I've seen Qbus hardware that talks to drives with card-edge
connectors and I've seen SCSI-to-cardedge interfaces on Suns of
Sun-3/260 vintage. I don't know the details of ST506, ESDI, and all
that, but it strikes me as at least _possible_ that something in that
line might be able to help.
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