23 Mar
2023
23 Mar
'23
4:52 p.m.
Speaking from experience with an old RD54, yep. Put a magnet on the
outside case towards the bottom, spin the drive up and it's gone forever.
On 3/23/2023 12:22 PM, Daniel Daigle via cctalk wrote:
Old MFM/RLL drives with stepper positioners generally
have no servo. The same can't be said of voice-coil positioned drives; they could use
any means, including hardware optical servos, etc. but often used a surface and a head for
that purpose... so yes, you can render one of these drives useless with a magnet if yours
has a servo surface. (This is not the same as embedded servo, which places servo
information -with- the data on the same surfaces.)