Using the official OSMC installer in Windows XP (yes, I know!), I get as far as
“OSMC is now being installed to your device”
The progress bar shows
0%
Then
“An error occurred while writing the image!
Please consult the log file”
I’m overwriting my RaspBMC install which has stopped booting altogether.
So, that tells me that the OSMC hasn’t written to the SD card at all.
Ah, found “osmc_installer_log.txt”
“Restoring backup to “Mass Storage Device USB Device” (E:)… 0%failed
Error: Could not write to the USB device!
Code : 23 - Data error (cyclic redundancy check).”