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220 questions
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1 vote
0 answers
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I have a few FAT32 formatted SD cards that seem to suffer from a damaged root sector. Now I want to read each of the SD cards' sectors individually in order to investigate and examine the SD cards. I'...
AxD's user avatar
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2 votes
1 answer
90 views

I am writing a simple bootloader (and, hopefully soon, an operating system). I have been making progress, but this part is stumping me a bit. I am writing this operating system and bootloader into a ...
Ryan Grube's user avatar
  • 23
0 votes
0 answers
35 views

We can get the cluster number of the first root directory of a FAT32 filesystem by looking at the bootsector. Though I am quite sure it is possible for the root directory to contain more than one ...
invalidsyntax_'s user avatar
  • 29
2 votes
1 answer
195 views

I am currently attempting to create my own SD Card reader. I have the SD card commands and protocol fully implemented and working giving me usefull and accurate data about my SDCard. ---CARD INFO--- ...
Code Cannibal's user avatar
  • 27
0 votes
0 answers
67 views

I'm currently writing a FAT formatting application and the FAT docs state the boot sector variable BPB_FATSz16 and BPB_FATSz32 but does not have any guidance on what appropriate values are for this ...
ChaoticGooose's user avatar
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2 votes
0 answers
63 views

Hi all im trying to set up an SPI interface between an MSP430 FR4133 and an external SD Card Reader. I am coming across these errors Error[e46]: Undefined external "f_open" referred in main (...
Taksiepacze's user avatar
  • 29
0 votes
0 answers
49 views

I am a newbie to Assembly and I got the following error: src/bootloader/bootloader.asm:292: error: TIMES value -23 is negative make: *** [build/bootloader.bin] Error 1 I'm trying to create a basic ...
user avatar
0 votes
1 answer
148 views

I am currently working on a school project to read FAT32 formatted drive. I understand that the starting cluster of Rdet, number of bytes per sector, number of sectors per cluster are all located in ...
M H's user avatar
  • 1
0 votes
1 answer
678 views

I have a Raspberry Pi 4 operating as a Plex media server witgh an externalk USB drive as media storage, the drive mounts and it perfectly usable but after the reinstall of the latest OS I cant ...
Sean Todd's user avatar
  • 1
1 vote
0 answers
104 views

I am looking for a way to account for DST time changes in file modified timestamps on FAT32 without having to restart the computer first after DST takes effect. As it is now I can only account for DST ...
riverofwind's user avatar
  • 569
1 vote
0 answers
100 views

Hi I need to be able to compare the last modified QDateTime's of two files that were copies of each other to tell if they have been modified and are no longer equal. One file is stored on an NTFS ...
riverofwind's user avatar
  • 569
1 vote
0 answers
86 views

I have problem that mkfs.fat leave FAT32 fields null with parameter -F 32. I am creating own bootloader and trying to read from EFI partition but somehow these values are at null value. Fields before ...
Honzasko's user avatar
  • 19
-1 votes
1 answer
389 views

I'm experiencing several issues with an SD card, and I'd like to provide more details to help the community understand the problem more comprehensively: I'm using an SD card with my Android smartphone....
Adnan's user avatar
  • 11
0 votes
0 answers
322 views

I have a problem with stm32l4r5 (nucleo-l4r5zi) and reading SD cards. I am using fatfs from https://01001000.xyz/2020-08-09-Tutorial-STM32CubeIDE-SD-card/. SPI and CS pins pulled up, prescaler 256. I ...
Chey's user avatar
  • 25
-1 votes
1 answer
303 views

I'm trying to create a bootable disk, e.g. a virtual disk or SD card, with the FAT32 file system from a C# code. It fails on two reasons: Formatting FAT32 partition with the standard windows tools ...
igor.br's user avatar
  • 29

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