By SamuelJenkins
Tue Mar 03, 2026 10:15 pm
Help needed please! I’ve searched the forum and the interwebs and can’t find anyone with this issue.
I recently purchased a MPC1000. It came with Akai OS 2.13 on it and everything works just fine. I’m attempting to load JJOS 3.16 and it loads correctly, no errors, but after installation when you try to load files from the CF card none of the files show. The folders show correctly but not the files within the folders. If I autoload a folder the files do load (you can see them flash by on the screen as the MPC loads them so I know the files are there and the OS can read them, they’re just not viewable and you cannot choose individual files. I have also installed OS1 (mpc1000_jv500.bin) and the same issue persisted.
Steps I’ve tried so far.
-Always erase after any OS install
-Loaded mpc1000_jv316.bin to two different CF cards (1GB) and using two different machines (Windows and Chromebook)
-Loaded mpc1000_jv316.bin through the USB port from a different Windows laptop
-Reformatted CF cards using the MPC1000 utility
-I removed the flash ram, cleaned the pins with rubbing alcohol and reinstalled it
In every situation with a JJOS version running you cannot view any files on the CF card. The only other interesting thing to note is that the initial boot screen appears corrupted when it comes up. This was the same on both JJOS’s I tried (3.16 and OS1). At this point I’ve run out of ideas to try. Has anyone seen this before and/or have any thoughts on what the issue is?
Picture of the startup splash screen:
or image here: https://photos.app.goo.gl/uU53gn2a9JmpgpZS6
Picture of the "Load" screen. There are files in the folder but they're not viewable.
or image here:https://photos.app.goo.gl/Fod5itbGA9xe1qj26
I recently purchased a MPC1000. It came with Akai OS 2.13 on it and everything works just fine. I’m attempting to load JJOS 3.16 and it loads correctly, no errors, but after installation when you try to load files from the CF card none of the files show. The folders show correctly but not the files within the folders. If I autoload a folder the files do load (you can see them flash by on the screen as the MPC loads them so I know the files are there and the OS can read them, they’re just not viewable and you cannot choose individual files. I have also installed OS1 (mpc1000_jv500.bin) and the same issue persisted.
Steps I’ve tried so far.
-Always erase after any OS install
-Loaded mpc1000_jv316.bin to two different CF cards (1GB) and using two different machines (Windows and Chromebook)
-Loaded mpc1000_jv316.bin through the USB port from a different Windows laptop
-Reformatted CF cards using the MPC1000 utility
-I removed the flash ram, cleaned the pins with rubbing alcohol and reinstalled it
In every situation with a JJOS version running you cannot view any files on the CF card. The only other interesting thing to note is that the initial boot screen appears corrupted when it comes up. This was the same on both JJOS’s I tried (3.16 and OS1). At this point I’ve run out of ideas to try. Has anyone seen this before and/or have any thoughts on what the issue is?
Picture of the startup splash screen:
or image here: https://photos.app.goo.gl/uU53gn2a9JmpgpZS6
Picture of the "Load" screen. There are files in the folder but they're not viewable.
or image here:https://photos.app.goo.gl/Fod5itbGA9xe1qj26