SP-FORUMS

Looks like it’s already been done and is working apparently .

I and Claude have managed to hack the latest firmware so that
A. It adopts the A6 disk management
B. It’s max format level is upped to 750 mb it’s that level as I have a 7 zip installed.

Hopefully the a6 disk management allows either a hard drive or a standard ide to cf adapter.

However I’m ...

I converted an 808ex to an A6 years ago, but decided to go back to a 808ex with a 750mb disc drive, it seemed a better option, just one thing i havn't seen written here is that you can store the o/s on an otherwise empty zip disc, so rather than transmitting the sysex midi message, just put the zip ...

i have been using a 750 zip drive in the 808 for years with no problems.
i also converted it to an a6 with a hard drive without problems, but found the 750 zip option better as your able to retain all the 808 functions, and you dont get the drive busy message as much, only thing is you can't use 100 ...