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Questions tagged [storage]

For questions on information storage on retrocomputing platforms.

0
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1answer
44 views

Which tape drives were the last to offer backward compatibility with QIC-150 Tape Cartridges?

I currently have some QIC-150 tape cartridges. These are the Imation DC6250 250 MB tapes. I understand that this came out in the late 1990's. I'd like to read these using a tape drive but want to find ...
12
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2answers
254 views

Using a modern PC or other digital audio recording device as a cassette recorder replacement

I'm having a hell of a time getting this to work. I've got a Casio fx-720p + FA-3 cassette interface, a TRS-80 PC-3 with its cassette interface and printer dock, and a Tandy 102 with a cassette cable. ...
3
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2answers
131 views

Archiving data on a nonmagnetic storage [closed]

I know that we have LTO tapes, which have really good longevity and are reliable. But they're still magnetic so they're not protected against big magnetic wave (e.g. from sun). There is an option to ...
6
votes
5answers
1k views

Cannot boot off of Compact Flash card

I am trying to fix up an old work computer I have from the early to mid 90's. Everything works fine, but the hard drive makes a horrible clicking noise when it loads anything, so I decided to replace ...
21
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2answers
3k views

What happened to bubble memory - is it still being sold?

At one time bubble memory was advertised as being able to store huge amounts of data in the size of a sugar cube. I don't remember what the memory density was compared to today's SD cards. What ...
-1
votes
4answers
447 views

Can a HiFi speaker erase a floppy disk?

I played 20 minutes of music with a floppy disk directly in front of the speaker's subwoofer. No damaged sectors at all. Can a speaker actually erase a floppy disk? How close does it need to be?
2
votes
1answer
159 views

How does a HD floppy drive react to an ED disk?

If one inserts an ED disk into a floppy drive, which supports sizes only up to HD, how does it cope with ED?
28
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11answers
10k views

Dealing with oversized files decades ago? Data transfer in the age of floppy disks

I can imagine the following situation 20 to 40 years ago inside a working office between two colleagues: "Can I have a copy?" "Sure, wait a moment....done! [eject] I'll pass that floppy disk onto ...
-4
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2answers
475 views

How long can a HD floppy disk hold 2.88MB before erasing itself?

From Wikipedia - Floppy_disk: to format or write to this high-coercivity media, the high-density drive switched its heads into a mode using a stronger magnetic field. When these stronger fields ...
4
votes
1answer
441 views

DD vs HD vs ED floppy disks: lifespan/writecycle difference? Other differences?

DD, HD and ED floppy disks have individual materials to match their densities. But is density their only difference? Are there any differences regarding: Maximum allowable rotation speed? Rewrite ...
2
votes
2answers
177 views

Do DD floppy disks need regular full reformats?

http://retrocomputing.stackexchange.com/a/5449?noredirect=1 Floppy Disks have tracks that can be destroyed by a magnet, which would cause it to need full reformats, as stated in the answer link above....
6
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2answers
267 views

What was the block spacing in early hard disks?

Early floppy disks had significant spacing between blocks, e.g. a PC 5.25" disk had a theoretical capacity of about 500K but was formatted as 360K, nine blocks per track, with a substantial fraction ...
8
votes
1answer
383 views

Which MS-/PC-DOS version was the first to allow multiple partitions to be used?

For IBM PC-DOS/Microsoft MS-DOS, which version was the first version to actually allow using more than one partition for data storage? How about using multiple primary partitions vs one primary plus ...
14
votes
2answers
638 views

What is the difference between DriveSpace and DoubleSpace?

DriveSpace is the successor to DoubleSpace. Both are DOS systems that mount a Compressed Volume File as a drive, allowing ordinary programs to interface with a compressed drive without an intermediate ...
5
votes
1answer
439 views

What is the history of data compression tools on personal computers?

On UNIX, the progression of the most widespread data compression programs was as follows: (AFAIR: Pre System V) compact (suffix .C), dynamic Huffman coding (AFAIR: introduced in System V) pack (...
10
votes
1answer
140 views

How does ProDOS allow for multiple volumes to exist on a single device?

On the back of this question, it got me thinking that it has always been that ProDOS would only support a ",D1" and ",D2" on a slot, i.e. slot 6 would have two addressible drives. With my 20MB Sider ...
8
votes
4answers
628 views

Magnetic tapes as a random access medium?

A two-part question: How widespread in legacy systems was the practice of using magnetic tapes as a genuinely random access medium at the OS level by pre-formatting them in a way before the first use,...
7
votes
2answers
73 views

Is there any persistent storage in a NEC MobilePro PocketPC?

I have recently acquired a NEC MobilePro 790 PocketPc from 2001. The specifications says that the device has 48MB memory, including 32MB of RAM and 16MB of flash storage. It also has a ROM that ...
26
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2answers
10k views

GameBoy Color games do not save any more

I have a Nintendo GameBoy Color with some games that support saving your game status and also have a real-time clock, like Pokémon Red and Pokémon Silver. But recently the game does not save any more,...