Higher density drives/media use a thinner layer and a lower read/write current creating a weaker magnetic field. The magnet representing a bit is thinner, resulting in a longer/thinner aspect ratio, which helps somewhat with retaining polarization, but the fact is that you're still trying to detect a weaker magnetic field, thus any loss may be more problematic.
----- Original Message ----- From: "Philip Stortz" <[EMAIL PROTECTED]> To: "Apple2list" <[EMAIL PROTECTED]> Sent: Wednesday, November 17, 2004 04:42 AM Subject: Re: Life Span of 5.25 disks > higher density disk should be more immune from damage from magnetic fields, because to make them > higher density you have to make the bits smaller on the disk. there are limits to how small a head > you can reasonably make, so part of it is using a material that needs a stronger field so that only > the strongest part of the field from the head has an effect, effectively making it act like a head > with a smaller gap. i've no idea however if the media is intrinsically more stable by itself (i.e. > how prone it is to random things over time) or if possibly these more strongly magnetized spots > actually tend to self destruct each other more. > -- Apple2list is sponsored by <http://lowendmac.com/> and... / Buy books, CDs, videos, and more from Amazon.com \ / <http://www.amazon.com/exec/obidos/redirect-home/lowendmac> \ Support Low End Mac <http://lowendmac.com/lists/support.html> Apple2list info: <http://lowendmac.com/lists/apple2.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/apple2list%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
