I have an old (classic) SE mac (two 800K floppy drives) with an external 40 MB hard drive. I saw on different sites that you should be able to use a external SCSI ZIP drive as a Hard (start up) drive.
I have OS 7.5.3 on the Hard Drive and on a ZIP disk.
When the Mac Boots up with the hard drive as the start up drive and with the ZIP Drive attached, the ZIP Drive works fine.
With the ZIP Drive (ZIP disk inserted) as the only SCSI device attached the Mac looks for a Start up Drive with the blinking question mark icon.
Is it possible to use the ZIP disk as the start up drive? Is there something that I am failing to do?
Any suggestions.
Thanks you for your interest. [img]smile.gif[/img]
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Thank you for the link it was very informative. I tried the Iomega Driver v 4.2, however I had no success. I had Iomega at first v 6 and removed it from all 7.5 System folders. I installed Drivers v 4.2 and restarted the Mac with the ZIP drive as the only SCSI device set on “id 5” “then on id 6”.
In either case the SE would not recognise the System 7.5 software on the ZIP disk.
Thanks again for taking the time to respond and I hope you are now in a position to enjoy the holiday season.
Dana
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The System folder on the ZIP Disk was installed in the same manor as the Hard Drive. The installer files were copied onto the Hard Drive and then installed on the ZIP Disk.
The system folder has the “ Happy Mac Face” icon on it. The ZIP Disk is formatted in Mac OS Standard format.
However when I checked the ZIP Disk on a beige G3 running OS X 1O.1.5 it shows up as plain folder where as the partitioned Hard Drive on the G3 showed a 9 icon for the OS 9 system folder.
When I booted into OS 9 on the G3 the folder shows the “Happy Mac” Icon on the system folder on the ZIP Disk.
I don’t think the difference is meaningful, I just thought as it is a difference I would report it.
Dana
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Some things to check out:
UPDATE: Try the keyboard combo first (listed below).
OS version: Mac Classic can only run System 6.0.7 or later to System 7.5.5 and earlier.
You need something lean enough to boot with 4MB (maximum in the Classic) RAM. A proper System7 startup disk can be made to do that, but be careful with Extensions and Control Panels; there is such a thing as too many.
Zip Drive: Some kind of Iomega tools or Iomega Guest is needed to see a Zip Drive, since the System has to mount before it can boot. Zip disks won't mount automatically. I seem to recall that earlier versions of Iomega's enablers didn't work too well, but you might be able to use a later version with your choice of OS version.
Termination: The Zip drive must have the termination switch set to "on". I would be trying this with just the zip drive on the SCSI bus, at least at first.
I'm not surprised the G3 didn't see the System Folder as blessed, you almost certainly don't have the correct System Enabler/Mac ROM file in the System Folder. The Classic has a ROM chip it uses to boot with, so that wouldn't be in the System Folder you created.
Secondly, OSX won't like anything earlier than 9.2x, and finally a Beige G3 can't start up from anything earlier than OS8.0 (or 8.5x for the Blue&Whites), so it's not going to see System7-anything as bootable.
SCSI device numbers: the Classic is going to boot from the first drive it sees with a valid System Folder; the Mac will be following a specific pattern during startup to look for a System Folder. It looks to the floppy drive first, then goes through the SCSI IDs starting at 0. That just happens to be your Internal HD's SCSI ID number (CD drives are 3, and 7 is the SCSI bus itself).
Assuming you have some way of booting the Classic if something goes "wrong" (ie a starup floppy, external CD drive, etc) you could try forcing the Mac to ignore device 0 and keep looking. I'm not sure if there's a Keyboard shortcut you could use, but if there is, try that.
UPDATE: It's Command-Option-Shift-Delete. Then hit power and hold the keys until the startup chime sounds.
If not, you could try dragging the "Finder" to the desktop while booted from some other System and then trying to boot from the Zip drive. It should ignore device 0 then. If that doesn't work, startup from (floppy, CD, etc) and drag it back to the HD's System Folder to restore booting from the HD.
System7x used to allow you to install the OS for "this Mac only" and "Any Mac". I would have "any" on the zip, if your version offers that choice.
Just to clarify...
- you started your SE from the external hard drive and then inserted the ZIP disk
- formatted the ZIP disk with Disk Utility in standard Mac OS format
- installed a fresh OS onto the ZIP disk from the disk images on the hard drive
I am going to pull my SE off the shelf and give this a try to see what is going on.
One other thought. IN the Start UP Disk control Panel can you select the ZIP drive as the startup device?
EDIT: Does this apply?
from Pickle's FAQ:
2.3.1 - Can I use a Zip drive with System 6 and/or as a boot disk?
The short answer is "Yes." The longer, more in-depth, useful answer is "Yes, provided that you get the right driver and don't use the disk with later versions of the driver on different Macs." JAG says:
As far as booting off a Zip, you need driver 4.2. Be sure and use a Zip disk that has NOT been used under a newer Iomega Zip driver or it won't boot the [computer] but it will work as a hard drive. You'll have to reformat it under Zip Tools 4.2 or earlier if you want it to be your boot Zip disk.
from another site
What about a Zip or Jaz backup?
In its IomegaWare 1.0 and later releases (this means the Tools software version 6.0 or later), Iomega provides the means in the Tools utilities to create a rescue disk. It take about 10 minutes as the software does a full surface scan of the Zip disk to verify the disk. It then loads the minimum OS software or a system of your choosing, plus your choice of disk recovery utility (it defaults to Disk First Aid). A standard backup of OS 8.6 plus DFA 8.5 takes about 15MB on the Zip. A 7.1 or 7.5 minimal system would probably take about 2MB.
For those of you with 190/5300 PowerBooks or later - with an internal Zip drive - this is a very convenient solution. But of course you can use an external Zip or Jaz via SCSI. Usually a PB will refuse to boot from Zip, essentially because there's no Iomega driver installed for it to recognise the drive. But Iomega's Tools software makes the Zip 'bootable'. Even if you select a Zip/Jaz as a startup disk with a system on it, under normal circumstances, the Mac won't boot from it. You have to use the Iomega software to make the rescue disk.
Linear Mode
