I get this form time to time.
After the Reader powers up, it does the busy spinner and then says
At this point pressing OK will format the device.
Workaround
1. press the reset button
2. reader is now off, but screen will remain showing error
3. plug in to computer
4. wait for READER partition to appear
Next steps
Once you see Reader, you can:
1. backup
2. delete any strange files (see below)
3. unplug Reader and everything will be back to normal
Cause
I believe this is cause by unrecognised files being present on the READER partition. For me these are either hidden files created when using macOS to copy files manually over to the READER partition, or files left over from a Calibre sync. I now use an app that cleans the READER partition as it is ejected.
After the Reader powers up, it does the busy spinner and then says
Code:
+---------------------------------------+
| Exceptional internal memory state |
| Formatting |
| [ OK ] |
+---------------------------------------+Workaround
1. press the reset button
2. reader is now off, but screen will remain showing error
3. plug in to computer
4. wait for READER partition to appear
Next steps
Once you see Reader, you can:
1. backup
2. delete any strange files (see below)
3. unplug Reader and everything will be back to normal
Cause
I believe this is cause by unrecognised files being present on the READER partition. For me these are either hidden files created when using macOS to copy files manually over to the READER partition, or files left over from a Calibre sync. I now use an app that cleans the READER partition as it is ejected.