Steve, Adrian,
I am pretty certain that alcohol will break down the binders and
remove the oxide. Since the bad disc was run through the drive the
head/heads should be cleaned before any more read or write attempts are
made otherwise more discs will be damaged.
Thanks,
rich!
On 7/10/2018 8:25 PM, Steve Malikoff via cctalk wrote:
Adrian said:
Tonight I got my imaging PC to successfully read some of the 8” disks from my
CPT8500 word processor using one of its own Tandon TM848-01 drives, sadly it
seems the boot disk is toast but I’ve been able to dump some of the data disks
as well as the Utilities. Since I have a box of unused disks
I thought I’d try writing back an image but got a lot of CRC errors. Closer inspection
of the disk itself shows this -
http://www.binarydinosaurs.co.uk/8inchFloppyImaging-7.jpg
<http://www.binarydinosaurs.co.uk/8inchFloppyImaging-7.jpg> - which looks like
damp.>
Is it actually the magnetic coating breaking down? Dare I attempt cleaning?
If it was me I certainly would attempt cleaning, after all it was unreadable
anyway. Perhaps try cleaning a test area with a cotton bud (Q-tip)
and isopropyl alcohol. If the stuff comes off without oxide removal then I'd
slice the top edge off the jacket to remove (with clean disposable
gloves on a lint-free surface) and clean the whole disc and finally put into a
clean jacket.
Steve.
