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[Irisman]

Hi,

I want to take a look to the contents of a old scsi hard drive 160 mb that I used long time ago, but it has macos installed on it. The idea is to connect it to the computer (ppc 7600), but it has another drive installed with the macos 8.6.

My idea is to copy some files from the 160 mb drive to the other drive, but as both disks have the system installed, that may be confusing to the mac (I guess) from what disk it has to boot, and maybe damage the boot on the 8.6 os disk, that is absolutely unwanted for me...

So the question is:   how can I manage to connect both drives in the computer, and boot -without risks- from the "8.6" and not from the "7.5" that is on the "other drive"?

Thanks in advance,
Irisman

[supernova777]

irisman
u can proceed without risk...
its ok to have more then one system drive.
u can switch between them by using the control panel startup disk feature under the apple menu!
users of dual booting osx/os9 systems do this all the time, only u can use the same technique
to switch between system folders/system drives

good luck in your vintage dig;)

[Irisman]

Hi again and many thanks for fast answering

I did the connection: now I have 3 scsi drives: the main HD, id 1, the cdrom, id 3, and the "aux hd", id, 6.

The thing now is that the "drive setup" app says <no disk> message  ?¿?     If I connect only that aux disk, then the system recognizes it and boot.   Maybe it´s about the different partitions type? 

Any help for me?

Thanks again!

[supernova777]

why are u even opening drive setup?
i said apple menu -> control panels -> startup disk
not drive setup!

will the current system not boot with the new drive connected?

[Irisman]

I tried the disk setup because the drive does not appears on the startup disk control

There only appears the 1GB disk, not the 160 mb one.

Both drives are connected, and the system boots from 1gb disk (macos 8.6)

[supernova777]

whats the system u are using PPC 7200?
and all the drives are scsi drives?
perhaps its because of where the drive is in the SCSI chain?
are they all connected to the same scsi interface port?

is this what u have?

[Irisman]

whats the system u are using PPC 7200?     --->  it´s a PPC 7600 very near to that
and all the drives are scsi drives?     --->  yup, all of the scsi drives
perhaps its because of where the drive is in the SCSI chain?    yup, the only scsi cable has two connectors, on
are they all connected to the same scsi interface port?    gonna try to disconnect the cdrom and interchange for the second drive!!!

is this what u have?   --> very very close to

[Irisman]

No results here, the scsi cable is the same for the cdrom and the hard drives.

Tested the disconnection of the cdrom, and connecting the 160 mb drive, with no luck for me.

This is making me more and more curious about the reason

[supernova777]

thats very strange,
so you can boot into the drive when its connected on its own without the other drive..
but when u connect both at the same time
the old drive is inaccessible? even to browse the data?

which os is on the scsi drive? system 7? or 8 aswell?

[Irisman]

thats very strange,   ---> sure
so you can boot into the drive when its connected on its own without the other drive..  --> yep, it boots and shows desktop etc.

but when u connect both at the same time the old drive is inaccessible? even to browse the data?   -- > exact. ¿?   I tried to remove scsi terminator on the drive, and same result.

which os is on the scsi drive? system 7? or 8 aswell?   --> it´s system 7.5

Maybe I am wrong, but as far as I know, the way system 7 used to format disk was different to system 8 and later, so maybe that can be an explanation: if you boot the system 8, it does not recognize the old system 7 disk format.

[supernova777]

yeah u should be glad u can boot into this disk at all.. and copy all files u want to another computer via ethernet
or firewire drive

[Irisman]

yeah u should be glad u can boot into this disk at all.. and copy all files u want to another computer via ethernet
or firewire drive

best option for me is USB pendrive then    

thanks for help!! 

[supernova777]

ethernet to another place will be alot faster then usb 1.1

[Irisman]

never tried to connect to a windows machine via ethernet...  guess if it is possible


edit: after 5 mins googling, I notice that I will lose less time by copying files to usb pendrive than setting up a crossplatform network connection

[IIO]

i believe i had that issue on my 7300 too back in the days.

with SCSI disks (or after hard chrashes) you might need to boot into another system folder by holding alt on startup, then selecting the new one. (note: this new current boot drive is under circumstances now set as boot drive in the PRAM settings, just as when you select it using the control panel. if this happens, just hold alt again when you want to boot back.)

[supernova777]

never tried to connect to a windows machine via ethernet...  guess if it is possible


edit: after 5 mins googling, I notice that I will lose less time by copying files to usb pendrive than setting up a crossplatform network connection

depends on
a) how many files (mb/gb)
b) how fast your network is (router, ethernet card, 10 vs 100 vs 1000 base T)