| Device | SD Access Policy | |--------|------------------| | MRDLX1 | Exclusive – full lock until power cycle or manual USB mode switch | | Elektron devices | Shared – USB MSD takes over, but playback stops | | 1010music Blackbox | Shared with forced unmount warning | | Teensy Audio Board | User-selectable (exclusive or shared via jumper) |
MRDLX1’s approach is more conservative than all of the above. mrdlx1 firmware sd card exclusive
You have the MRDLX1 device connected via USB to a computer. The computer sees the SD card as a removable drive (e.g., Drive E:). Even if you are not copying files, the OS polls the drive. The firmware attempts to go exclusive, but the OS holds a shared lock. Result: The firmware refuses to start the print or data acquisition. | Device | SD Access Policy | |--------|------------------|
Fix: Disable USB Mass Storage mode in the MRDLX1 configuration (usually via #define USB_MSD_ENABLE 0 in the firmware config, then reflash). Or physically unplug the USB cable before powering the device. Even if you are not copying files, the OS polls the drive
#!/bin/sh
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