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Re: How do I move a disk from one 7xxx to another and related matters?

On Tue, 8 Jul 2003, Chris Tillman wrote:

> On Mon, Jul 07, 2003 at 09:31:25PM +0800, debian@computerdatasafe.com.au wrote:
> > I have a 7300/180 which has errors on /dev/sda. I've tried reinstalling,
> > using a destructive badblocks test to no avail.
> > 
> > Having a 7200/120 that's dead for other reasons I thought a fine idea to
> > move its disk to the first.
> > 
> > I exchanged the two assemblies that have disk, CD and floppy.
> > 
> > Oh wretched computer!!
> > 
> > I swear it wouldn't boot, wouldn't talk to the screen....
> > 
> > I took it apart for a few days to do some work on another, the
> > reattached kbd, mouse and monitor. It didn't boot the HDD, but it does
> > boot floppy.
> > 
> > This disk contains my last copy of macos. I've been deleting all the HFS
> > partitions - /dev/sda5 and up except for one - and installing Woody into
> > /dev/sda5 (except for that one where it went into /dev/sda6).
> > 
> > Are there any tricks I should have observed in moving the hard drive?
> The hard drive itself should have moved without a problem. I don't know
> about moving the whole assembly; maybe there is some driver electronics
> involved? 

The two assemblies are compatible, maybe identical. The drive is
recognised okay, and I can fdisk it.

> If you can see the hard disk in the installer, though, it should be OK.
> > Is there any reason I should have preserved mac os on these systems?
> Well, I would, if it's your last copy. But I'm not you :) It's true

In that case, it can go. I'll get another at another auction if needs

> that BootX running from MacOS is a more flexible system than quik,
> but many don't want MacOS around for philosophical reasons.

I don't have any religious objection to MacOS, it's just that AFAIK I
don't need it. I do want the disk space for Linux though, and for sure I
had to do something.

> The difficulty with the 7200, and maybe the 7300, is that OpenFirmware
> doesn't drive the screen, so if you want to muck around in there, 
> you have to hook up a tty to the modem port.

Thereis lies a whole nother bunch of fun. I have a Mac modem cable, came
with a box of junk, and I have a PC null-modem cable. The two connect,
and with Linux running at both ends I can type back and forth at myself
until I become bored with it.

However, O-F talks the the peecee, but doesn't listen.

Quik also talks to the peecee and doesn't listen.

Since I wrote previously, I've booted the Woody bootfloppies and had a
fiddle with nvsetenv, and I set the system to boot from the internal
disk. Nothing happened that I could see, but I happened to be wired up
with minicom listening at the peecee and here's what it said:
RESETing to change Configuration!
no bootable HFS partition

> > Can I make a bootable CD for them without preserving macos?
> Bootable CDs are not possible using only free software. We don't have
> bootable CDs in the distribution for OldWorlds. OTOH, a CD with the
> MacOS boot drivers is bootable no matter what remains on the hard
> disk. (But, if there are no HFS partitions, it wouldn't be able to do
> much anyway.)

So long as it's legal, I don't care how I create bootable CDs. Is there
something I should read?

As things stand right now, I have to do it from Linux, and if it's
possible on my Athlon so much the better: that's by far my fastest
computer and has a decent amount of disk space. I could only make small
CD images on the Macs, or make them slowly over NFS.

> > What partitions _should_ I keep?
> All depends on what you need, if you're running out of room, if
> you want to use BootX. You need MacOS for BootX.
> > Does it matter that I've got Apple partitions from a different computer?
> It shouldn't. The driver partitions are needed for a MacOS
> installation, and not needed if you get rid of it. But they're small,
> I wouldn't bother with them unless you just want to start clean.

How do I tell whether a disk has firmware I should keep?

> > How do I initialise a new hard disk for these machines? Without Macos?
> You can use mac-fdisk in the installer to initialize a new partition
> map, with the i command. That will wipe everything out.

I sort of figured that might be so, but see my previous response.

Thanks for your time.



John Summerfield

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