MobileRead Forums - View Single Post

markA · 08-30-2020, 03:27 PM

i have the read only problem on my PB840 too. But i dont know what the exact problem is. I made a disc image. Then i formatted the SD card with the sandisk sd card formatter. after that i restored the image. but the problem remains. there is no indication that the sd card has bad sectors. how can you test if the card is ok? or that there is a hardware failure? which tool must be used. one from linux ?
odd enough the dd from linux gave a different image than a tool for windows.
I see many instructions but they all contain minimum info and are more guide lines.
I would prefer to fix the original sd card. i can not compare it to a working one since i have only the image i extracted and thus no idea if this is a usable image or not.

thanks

08-30-2020, 03:27 PM	#102
markA Junior Member Posts: 3 Karma: 10 Join Date: Aug 2020 Device: pocketbook 840	i have the read only problem on my PB840 too. But i dont know what the exact problem is. I made a disc image. Then i formatted the SD card with the sandisk sd card formatter. after that i restored the image. but the problem remains. there is no indication that the sd card has bad sectors. how can you test if the card is ok? or that there is a hardware failure? which tool must be used. one from linux ? odd enough the dd from linux gave a different image than a tool for windows. I see many instructions but they all contain minimum info and are more guide lines. I would prefer to fix the original sd card. i can not compare it to a working one since i have only the image i extracted and thus no idea if this is a usable image or not. thanks