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.img vs. .image Files (and Writing Them To Disks)
Posted by: LadyAiluros on 2024-02-11 07:43:52
I think this is the problem that made me abandon 68K in the first place but I'm sure there is a solution.
I have some 68K images that are .image, which Disk Copy reads and mostly writes. I have more that are .img that Disc Copy (4 and 6, I tried both) dont even see to try and dump to disk. Is there are program that can either 1) "burn" these to a flooppy or 2) mount them in System 6 as disk images so I can just run or install the programs? I've been Google-ing and poking arounf the forums here since last night to no avil but I don't know if I'm even using the correct search terms. I played with Disk Jockey and I can see what's in the image and make an .hfs out it?
Posted by: joshc on 2024-02-11 10:54:06
The MountImage extension for System 6 might be what you’re looking for.
Posted by: joshc on 2024-02-11 10:56:45
But some more info may be useful. What machine and OS are you doing this with? Are you sure the files are not corrupted? How are you downloading and transferring the image files?

As far as I know the extension doesn’t mean much, the actual file type does.
Posted by: cheesestraws on 2024-02-11 12:03:09
The ones that DiskCopy can't open are likely raw floppy images. You can copy those directly onto a floppy disc, use an emulator (or a floppy emu). Try dragging them onto mini vmac and see if they open.
Posted by: LaPorta on 2024-02-11 12:26:55
A better solution to your question is that when YOU make disk images, make them with Disk Copy 4.2 (or at least save them in that format) so we don't run into these asinine raw disk image, .dsk, and whatnot issues. I don't even understand why people use these formats when the target hardware/software doesn't even play nice with them...the equivalent of someone making a .zip to compress System 6 software.
Posted by: LadyAiluros on 2024-02-11 13:14:43
But some more info may be useful. What machine and OS are you doing this with? Are you sure the files are not corrupted? How are you downloading and transferring the image files?

As far as I know the extension doesn’t mean much, the actual file type does.
Okay so I am making images for a Mac Plus running System 6 but since that has very limited memory, I'm using a PowerBook 1400 running MacOS 8 with the floppy module installed to do the actual writing. The images are on a BlueSCSI that I can pop back and forth.
I have tried both DC 4.2 and DC 6.x with no success on the .img files. I downloaded CreatorChanger but it refuses to run and gives my a cryptic Error -39. I have not tried just dropping them onto the "blank" floppybut I can do that. I can't find the MacOS 8 equivalent of Disk Utility, and I'm starting to see why they needed to get OSX out the door as bad as they did 😛 I'll look for that extension, I assume ion the Garden somewhere.
Posted by: Mk.558 on 2024-02-11 13:58:25

Error -39 corresponds to:
-39eofErrEnd of file; no additional data in the format

How many bytes is the disk image? Could be Read-Only Compressed. What is it specifically you're working with? Legacy Recovery disk images?

The Plus and SE benefit massively from 4MiB of RAM. They're basically useless with less than that, as you can't run a RAM disk for swap space or have the OS sit in memory.
Posted by: LadyAiluros on 2024-02-11 14:01:29

Error -39 corresponds to:
-39eofErrEnd of file; no additional data in the format

How many bytes is the disk image? Could be Read-Only Compressed. What is it specifically you're working with? Legacy Recovery disk images?

The Plus and SE benefit massively from 4MiB of RAM. They're basically useless with less than that, as you can't run a RAM disk for swap space or have the OS sit in memory.
Yeah a memory upgrade is on the table. Need to deal with a BUNCH of other stuff first though ... oh the joy of home ownership 😛

I would have to fire the PB up and look. It could be they are all just stuff I got from like Garden and IA.
Posted by: Mk.558 on 2024-02-11 14:06:57
I recommend networking. It's a good method to ship stuff around without fudging around with Sneakernet. Bonus: A good bridge box can unpack archives and stuff rather than having to decompress archives and shuffle stuff around on a 68000 CPU. Most of the time when I'm doing extended fudgery I have an OS 9 box that can decompress things, put it on a RAM disk and share it all out. Much much faster. A normal person would, say, install 7.5.3. from floppies or something, laboriously copying things over, bringing the updates and stuff, but I just install it all in a virtual machine (usually Mini vMac) and then shuffle the whole thing at once over the network when it's all done.
Posted by: LadyAiluros on 2024-02-11 14:08:48
I recommend networking. It's a good method to ship stuff around without fudging around with Sneakernet. Bonus: A good bridge box can unpack archives and stuff rather than having to decompress archives and shuffle stuff around on a 68000 CPU. Most of the time when I'm doing extended fudgery I have an OS 9 box that can decompress things, put it on a RAM disk and share it all out. Much much faster.
Yeah I have to find the right cables for the networking card that came with the 1400. I bought it as a bridge Mac, but maybe I need like a pizza box or something? I got it b/c it had the swap-able CDROM and Floppy modules.
Posted by: Mk.558 on 2024-02-11 15:39:52
1400 is fine as a bridge box. Pizza boxes -- meh. They don't do anything remarkable for me to worry about. The best bridge box is a PM G3, which can boot OS 9 and OS X. OS X is slow on 300MHz G3s, even Jaguar is barely tolerable. But it has serial port, ethernet, floppy drive and CD drive.

As long as you have something newer to ftp or AFP share to the 1400, they can be all linked together no problem.
Posted by: LadyAiluros on 2024-02-11 15:58:19
I do, if I could get networking going on the 1400. I have an FTP already on the network for all my DOS games to send them over to the 486. I'd love to be able to do the same with this. There is a proprietary cable I need for the network card that came with the 1400. Or figure out of the BlueSCSI (I got the one with WiFi) can do it in place of the Dayna card.)
Posted by: Mk.558 on 2024-02-11 18:13:30
Why not just use a MacIP bridge so the Plus can also use FTP?
Posted by: LadyAiluros on 2024-02-12 04:58:19
Why not just use a MacIP bridge so the Plus can also use FTP?
I would love that - this is the first anyone has told me of it! Is there a good guide?
Posted by: finkmac on 2024-02-12 05:02:13
i've never messed around with macip myself... I find it a tad finicky and I already have a proper appletalk setup as it is...

but, one of our fellow forum members ( @mactjaap ) has this
Posted by: LaPorta on 2024-02-12 05:26:27
I didn’t realize you had the 1400. Just rig up a printer cable between the 1400 and the Plus, set up file sharing on the 1400, enable AppleTalk on the Plus (assuming your startup disk has it) and you should be just fine.
Posted by: cheesestraws on 2024-02-12 05:26:46
I didn’t realize you had the 1400. Just rig up a printer cable between the 1400 and the Plus, set up file sharing on the 1400, enable AppleTalk on the Plus (assuming your startup disk has it) and you should be just fine.

Yes, do this.
Posted by: Mk.558 on 2024-02-12 18:48:36
MacIP is pretty easy to set up actually. You literally just set MacTCP to "Server" and a few other things and it's done. You can use macip.net's baked up VM servers to do that stuff for you. I like his stuff, but I want to cook up a VM that actually has a GUI one of these days. A lightweight, sub 2GB Linux distro that has a fully featured GUI and stuff that can do the same stuff his does.

I talked a little bit about it in the IPNetRouter section of the Guide, but I'm going to revisit that a bit more later. Setting MacIP to Server is also used when you're using a GatorBox, FastPath or the like. You won't need any of those tbh. If all you have is the 1400 and the Plus, then I'd just use that macip.net VM server instead.
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