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Subject: Is there any legitimate use for new 5.25" floppy disks? rss

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Gstrobe188 wrote:
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I call a tech foul, a good use, but the pictured discs are 3.5", not 5.25". Personally I prefer CDs as drink coasters.
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wmshub wrote:
nycavri wrote:
bop517 wrote:
So, my 8" floppy disc is of no use to anyone?
I'm not touching that one . . .
[Though I do remember the 8" floppies that booted up my Apple IIe.]
The IIe used 8" floppies? I thought the IIe used 3½", or maybe 5¼"...the only 8" floppies I ever actually used were for a Dec PDP-something. Maybe a PDP-10? I know it wasn't a PDP-11, and I don't think it was a PDP-8, it was one of the others.
I actually used 8" disks at a job in the early 90s. I temped a few weeks at a company that had old NEC computers with these huge disk drives that took 8" disks that held just under 80KB
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bop517 wrote:
So, my 8" floppy disc is of no use to anyone?
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wmshub wrote:
The IIe used 8" floppies? I thought the IIe used 3½", or maybe 5¼"...the only 8" floppies I ever actually used were for a Dec PDP-something. Maybe a PDP-10? I know it wasn't a PDP-11, and I don't think it was a PDP-8, it was one of the others.
External image
PDP-8/E with DECtape


The Apple II used 5¼" floppies, and it was before the IIe I think. Maybe 8" was most common on CP/M systems?

PDP-10 was a giant mainframe. It used mag tape.

PDP-11 was a pretty powerful minicomputer; probably too powerful for floppies to be useful. I think they generally used mag tape.

PDP-8s are the right size, but early models used DECtape. Maybe a PDP-8/A?
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* sigh *

This brings back memories of my Atari 800XL. Single sided 5¼" floppies were cheaper than double sided, but all it took was a special tool to cut a notch in the wrapper to access a single as a double sided. (You had to turn the floppy over to the second side.)

Many 3½" outer cases have been used as scenery elements in miniatures gaming, dungeon doors or spaceship hatches and such.
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JoshBot wrote:
wmshub wrote:
JoshBot wrote:
wmshub wrote:
nycavri wrote:
bop517 wrote:
So, my 8" floppy disc is of no use to anyone?
I'm not touching that one . . .
[Though I do remember the 8" floppies that booted up my Apple IIe.]
The IIe used 8" floppies? I thought the IIe used 3½", or maybe 5¼"...the only 8" floppies I ever actually used were for a Dec PDP-something. Maybe a PDP-10? I know it wasn't a PDP-11, and I don't think it was a PDP-8, it was one of the others.
Early TRS-80 used 8 inch.
That may have been an option, but wasn't the standard one. I (well, my father, but I used it more than him) had a TRS-80 model I; when they became available, it was upgraded with the expansion box and eventually two disk drives. Both drives were 5¼", and all commercial software was on 5¼". I never saw a TRS-80 with 8" drives attached.
It was the less common option.
The home computer versions of the Radio Shack computers were the TRS-80 Models I, III and IV. The I didn't come with floppies initially but when it got there they were 5.25"

The Model II (don't confuse this with Level II which was a version of the Model I) had 8" drives and was mostly targeted at business users.
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Tall_Walt wrote:

PDP-11 was a pretty powerful minicomputer; probably too powerful for floppies to be useful. I think they generally used mag tape.
PDP 11 used multiple platter removable hard disks which had to be screwed into the disk drive. It was like a spindle with a load of circular plates separated by air. They were covered by a plastic dome and base when not in use.

Part of my first job was to do the backup which involved swapping them over. The drive itself was as big as a washing machine.

[Edit: BTW does anyone remember disk doubling 5.25" disks? You'd remove the disk and punch a mirror image hole through the container and cut out the write protect notch on the opposite side before returning the disk. You could then put the disk in upside down for a second side of info ]
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I just looked these up on Ebay and they do still sell and at a price that a few boxes are worth putting up.
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mileser wrote:
wmshub wrote:
nycavri wrote:
bop517 wrote:
So, my 8" floppy disc is of no use to anyone?
I'm not touching that one . . .
[Though I do remember the 8" floppies that booted up my Apple IIe.]
The IIe used 8" floppies? I thought the IIe used 3½", or maybe 5¼"...the only 8" floppies I ever actually used were for a Dec PDP-something. Maybe a PDP-10? I know it wasn't a PDP-11, and I don't think it was a PDP-8, it was one of the others.
I actually used 8" disks at a job in the early 90s. I temped a few weeks at a company that had old NEC computers with these huge disk drives that took 8" disks that held just under 80KB
My first college placement was to ICL, and the in-house servers there used 8" floppies. The server lived in the office with us and there was the most splendid noise one day as a head failure effectively shredded an 8" disk. This would have been late '87...
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Man, this brings back memories of explaining to people repeatedly - No, the hard disk is actually a piece inside the computer, this is a floppy disk. No, I realize that it's not floppy, like the bigger one over there, but it's still just a 3.5" floppy disk and not a hard disk....
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Karlsen wrote:
Gstrobe188 wrote:
From gallery of Gstrobe188
I call a tech foul, a good use, but the pictured discs are 3.5", not 5.25". Personally I prefer CDs as drink coasters.
Doh!

If you put CD's in the microwave for a few seconds they crack then they make really neat coasters. lol
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mileser wrote:
wmshub wrote:
nycavri wrote:
bop517 wrote:
So, my 8" floppy disc is of no use to anyone?
I'm not touching that one . . .
[Though I do remember the 8" floppies that booted up my Apple IIe.]
The IIe used 8" floppies? I thought the IIe used 3½", or maybe 5¼"...the only 8" floppies I ever actually used were for a Dec PDP-something. Maybe a PDP-10? I know it wasn't a PDP-11, and I don't think it was a PDP-8, it was one of the others.
I actually used 8" disks at a job in the early 90s. I temped a few weeks at a company that had old NEC computers with these huge disk drives that took 8" disks that held just under 80KB
We used them in the late 80s for some old, stand alone, word processing machines when I was in the Navy.
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The 8" are good to turn into clocks.
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Karlsen wrote:
[Personally I prefer CDs as drink coasters.
While CDs make for visually appealing coasters, I always worry that some condensation from the glass will fall through the hole in the disc, so I've never actually used them. Am I crazy?
 
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You could always place a little piece of clear packing tape over the hole.
 
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LRayZor wrote:
Tall_Walt wrote:

PDP-11 was a pretty powerful minicomputer; probably too powerful for floppies to be useful. I think they generally used mag tape.
PDP 11 used multiple platter removable hard disks which had to be screwed into the disk drive.
You could also use the RX01 or RX02 8" floppy disk drives on a PDP-11. There were also fixed hard disk subsystems - like we know and love as well as a number of different types of exchangable hard disk systems like you describe.
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