On Thu, 3 Nov 2022 at 23:47, Grant Taylor via cctalk <cctalk@classiccmp.org> wrote: > > Please expand "GCR".
Group-coded recording. https://en.wikipedia.org/wiki/Group_coded_recording Specifically: https://en.wikipedia.org/wiki/Group_coded_recording#Apple As opposed to Modified Frequency Modulation: https://en.wikipedia.org/wiki/Modified_frequency_modulation In ST-506 hard disks, MFM was supplemented by RLL, Run-length Limited: https://en.wikipedia.org/wiki/Run-length_limited -- Liam Proven ~ Profile: https://about.me/liamproven Email: lpro...@cix.co.uk ~ gMail/gTalk/FB: lpro...@gmail.com Twitter/LinkedIn: lproven ~ Skype: liamproven UK: (+44) 7939-087884 ~ Czech [+ WhatsApp/Telegram/Signal]: (+420) 702-829-053
