QJ.net Game Discussion - PSP, Xbox, Wii, PS3, PSP Homebrew, and PSP Guides

polish · 10-01-2005, 05:51 AM

is a Sony Minidisc!
here are some pics that I took of an old minidisc i found in the bin at work
1. The minidisc disc
http://img310.imageshack.us/img310/9443/dsc000657di.jpg
2. The UMD in its shell
http://img310.imageshack.us/img310/7201/dsc000670gg.jpg
3. UMD and minidisc on top
http://img310.imageshack.us/img310/8563/dsc000660mg.jpg

Now, if we take a look at the minidisc there are several types, i think mine is the basic one and i dont really know if they differentiate in size of disc, but on capacity sides a Hi-MD has 1gigabyte of storage

And these minidiscs are 61 milimeters in diameter and UMD is 60 milimeters in diameter and theres propably a slight difference between the two in the middle of about 0.1 - 0.2 milimeters

So... we would need to shave the minidisc around in order for it to become 60 milimeters and that would be okay since 0.5 millimeter is plastic on one side and same for the other making that a really close clone of a UMD

My questions would be, if Hi-MD ican be read from a DVD laser or are DVD lasers compatible with all types of CD's

And the big question is will the Sony PSP read these discs and the filesystem that its based on

**brain_stew** · 10-01-2005, 05:55 AM

The two discs couldn't be more different, a minidisc is magneto-optical and a UMD is just a standard disc like a DVD but it uses a different wavelength to that. This topic has been discussed in great depth, and each time it has been revealed to be absolutley impossible.

10-01-2005, 05:51 AM	#1
polish Join Date: Sep 2005 Posts: 14 Trader Feedback: 0	Propably the only thing that comes close to a UMD is a Sony Minidisc! here are some pics that I took of an old minidisc i found in the bin at work 1. The minidisc disc http://img310.imageshack.us/img310/9443/dsc000657di.jpg 2. The UMD in its shell http://img310.imageshack.us/img310/7201/dsc000670gg.jpg 3. UMD and minidisc on top http://img310.imageshack.us/img310/8563/dsc000660mg.jpg Now, if we take a look at the minidisc there are several types, i think mine is the basic one and i dont really know if they differentiate in size of disc, but on capacity sides a Hi-MD has 1gigabyte of storage And these minidiscs are 61 milimeters in diameter and UMD is 60 milimeters in diameter and theres propably a slight difference between the two in the middle of about 0.1 - 0.2 milimeters So... we would need to shave the minidisc around in order for it to become 60 milimeters and that would be okay since 0.5 millimeter is plastic on one side and same for the other making that a really close clone of a UMD My questions would be, if Hi-MD ican be read from a DVD laser or are DVD lasers compatible with all types of CD's And the big question is will the Sony PSP read these discs and the filesystem that its based on

10-01-2005, 05:55 AM	#2
brain_stew Join Date: May 2005 Location: Newcastle, England Posts: 3,145 Trader Feedback: 0	The two discs couldn't be more different, a minidisc is magneto-optical and a UMD is just a standard disc like a DVD but it uses a different wavelength to that. This topic has been discussed in great depth, and each time it has been revealed to be absolutley impossible. __________________ [B][URL=http://forums.qj.net/showthread.php?t=16878]Ultimate Newbie Guide[/URL] [/B] [b] Read about:[/b] [url="http://forums.qj.net/showthread.php?t=9708"][color=Purple][b]Operation: PSPositive Posting[/b][/url] [b] [url="http://forums.qj.net/showthread.php?t=2047"]Posting Guidelines[/url][/b] [b][url="http://forums.qj.net/showthread.php?t=2189"][color=Red]Ultimate Guide[/color][/url][/b] [b][url="http://forums.qj.net/showthread.php?t=4394"][color=Green]Piracy Policy[/color][/url][/b] [b][url="http://forums.qj.net/showthread.php?goto=newpost&t=18175"][Downgrader Topic][/url][/color][/b] [URL=www.maximopark.com]MON THE PARK![/URL] [URL=www.thefutureheads.com]Le Heads rule[/URL] [B][SIZE="3"][COLOR="Red"] [/B][/COLOR][/SIZE]

QJ.net Game Discussion - PSP, Xbox, Wii, PS3, PSP Homebrew, and PSP Guides

Propably the only thing that comes close to a UMD