Ah, C64 Turboloaders.... and the lovely flashing horizontal on-screen bars. Bought my first disk drive in 1985, when Debenhams were offering a 1541 and MPS801 printer for £199.99 Only to find the 1541 was slower than a tape turboloader, as the 1541 used a serial bus :(
Until disk turboloaders came out. My personal favourite was The Expert Cartridge. And then there were the parallel interfaces for the 1541, possible because the 1541 was an intelligent drive with its own on-board CPU and 2K RAM, always wanted DolphinDOS or Trilogic's Phantom, but never did get one. Did buy a "DeepScan BurstNibbler" cable, but by that time had replaced my 1541 with a 1541C - and it wasn't compatible :(
The schematics for parallel loaders (Dolphin or DiskDemon) have been available on-line for years, but the sense of nostalgia isn't quite enough to tempt me into buying a C64 and drive...
The same onboard CPU was also at the heart of C64 Fast Hack'em; one of the copiers allowed you to chain two drives together, source disk in one, blank disk in the other, start a copy... and then do something else on the C64. Very novel at the time.
Had a great affecttion for the 1541, a truly great drive let down only by the serial bus. There was an awesome book covering all the different copy protection methods, error 21, 23, 25, 27, fat tracks, long tracks, sync errors etc, beaten only by the Cracker-Jaxx series from Maverick / Hack-U
Personally, I loved the hardware "hacks" for disk drives; Supercard Ami II internal hardware copier for the Amiga, BackupBuddy for the C64, Copy ][ PC for the IBM Still have the Ami II and Copy ][ hardware.... dont ask why, I don't know, cant bear to sell them.
Bought 3 LS Superdisks in 1999, one for me and each of two mates, for copying stuff between each other. They never got fitted, never got used, and I found them in the loft a year ago, complete with a single LS-120 disk. Obsolete because CD-R became affordable in 1996, with the Ricoh CD55 (or was it TEAC?), and then Yamaha's awesome CDR200 and CDR400 drives (superb models, with very moddable firmware).
I know one of my PCs has a disk drive. I have a box of disks somewhere - some old Amiga stuff, some old PC stuff, a Netware licence disk... and thats about tt. Haven't read a disk since, 2012? 2007?
Disk drives. Consigned to nostalgia since 1999.