Fix SdCard Write Fail

SD CARD WRITE FIX

SdCardWriteRGB565.exe may sometimes fail to write to the SD card when using "CONVERT & WRITE" for large video files, also when NTFS, exFat, or FAT is used.
This is because of the system is locking the MBR sector (sector 0) in this card.

To fix this as a temporary solution until the exact cause of this behavior is determined, I manually destroy the MBR record in Sector0:

0. Try another Sd Card if possible.

1. Download and install HxD HEX editor (https://mh-nexus.de/en/hxd/) 

2. Start HxD HEX editor as Administrator and open the Sd Card in write mode

- open the Sd Card using the small disk button in the menu ribbon

- remove the mark from "Open as Readonly"

- click "Open"

3. Remove the MBR identifier.

- at the end of Sector 0 you will notice a MBR marker "55 AA"

- Select it and type four 0-s

4. Save the changes

5. Remove the SD card and insert it again

6. Run SdCardWriteRGB565.exe as Administrator and continue.

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