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Questions tagged [exfat]

exFAT is a Microsoft file system optimized for flash memory such as USB flash drives and SD cards.

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Mac OS High Sierra diskutil eraseDisk leads to Error: -69877: Couldn't open device

I am having issue converting a new SanDisk 128GB microSD card from ExFAT to FAT32 $ diskutil info /dev/disk2 Device Identifier: disk2 Device Node: /dev/disk2 Whole: Yes Part of Whole: …
It_is_Chris
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How to access last modified date/time for file on exFAT with 10 ms resolution?

From my research, exFAT has a 2-second resolution for the last modified date/time of files. Also, there is another field for the file storing the offset to the last modified date/time with a 10-millisecond resolution. Am I correct about this? When I…
riverofwind
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How Do I Run Android Studio Code from an exFAT Device?

I wanted to save my code from my exFAT Samsung T5 SSD. I don't have a personal laptop, so I am currently using our office laptop. I want to secure my code, but I can't seem to build the code saved from the SSD, but I am getting the following…
Kellin Strook
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WinCE batch format SD Card?

I need to format many SD cards in WinCE. I am not familiar with CE, currently I'm using the CE storage manager to format them but it takes a long time and doing something many times leads to mistakes. Is there any way to format a SD card via batch…
Sebastian Heyn
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what are exfat disk file name limitations?

Have lots of failures copying my disk to another, exFAT disk. Specifically, file names with ':', '|' chars did not get through. What is the allowed charset? Is there a program to solve the issue, like changing the illegal chars to '.'?
Alex B
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EXFAT vs FAT32 speed for cpy -> exfat slower

As I'm working on an embedded system treating file management on media, I noticed that, using a same media (USB or SD, formated several times on both FAT32 and exfat fs), when I try to copy a file on it, it's faster in fat32 than in exfat (2 times…
didichek
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Can't mount ext4-formatted USB

I have recently bought a USB, which is initially formatted using exFAT. Then I tried wiping it off and format it with ext4. But then, Linux Mint 20 doesn't seem to be able to mount it. When I checked the "disks" utility, the USB appeared, but it…
157 239n
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How can I list files in exFAT file system from image file?

I have created a disk image using FKT Imager of a USB stick with exFAT partition. I want to make a list of all folders and files on the image. My exFAT starts at LBA=6146048 with Sector size=512 that gives me offset=3146776576. Below is a screenshot…
Europa
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macOS - os.listdir returns double items which starts with "."?

Despite that the folder has two files (a.apk, and b.apk), os.listdir function returns four files such as ._b.apk, ._a.apk, a.apk, and b.apk. Where do the first two files come from? How can I prevent Python to list them? Software Stack: - OS: macOS…
talha06
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exFAT cluster allocation strategy

I am attempting to create an exFAT file system implementation for an embedded processor. I have a question about the cluster allocation of a file. Suppose I have created a file and then written some data to the file. Lets say that the file has used…
jb2019
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How can I find out the cluster size of an exfat partition?

How can I find out the cluster size of an exfat partition? It appears that fsutil only has a command for ntsf partition .
stefano casadei
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Why is exFAT's "Size on Disk" larger than that of NTFS when they both have the same allocation unit size?

I have two hard drives, one formatted with NTFS and the other with exFAT. Both have an allocation unit size of 16384K. However, when I copy files between the two disks, the same file will take up significantly more "size on disk" on the exFAT drive…
R.F. Nelson
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Format a drive in node.js

I'm working on a project in node.js and I'm stuck at this. I need to convert an external device ( a usb stick etc.) into an "exFAT" partition if it's not an exFAT . I used an npm package called "drivelist-scanner" to get the list of usb devices…
Shiva Teja
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Issue using Vagrant SSH when vagrant.d folder is on an external exFAT drive

Setting up Vagrant for the first time and I'm using the VAGRANT_HOME environment variable to change the location of the ~/.vagrant.d folder to an external drive (I'm paranoid about SSD wear and tear, sue me). This is causing an issue with the…
user41997
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My external HDD run 1.4 times faster with APFS, should I stick with it?

After doing speed test, my external HDD is 40% faster in data transferring speed after formatted it to APFS from HFS+ or even ExFat. But I hear people saying on the internet that mechanical disk should be formatted with HFS+ and APFS is slower for…
Zui Zui
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