45
votes
How to remove partition on SD card using a Mac?
The diskutil command on macOS is incredibly powerful and can do all that you need. (You can run the following in the Terminal app.)
Find your SD card:
$ diskutil list
...or:
$ diskutil list ...
- 551
36
votes
Can't reformat SD card (Yosemite)
Get drive name
diskutil list
then try
diskutil unmountDisk force /dev/DRIVENAME
Then format
diskutil eraseDisk JHFS+ Emptied /dev/DRIVENAME
or
diskutil eraseDisk FAT32 NEWNAME /dev/DRIVENAME
- 481
27
votes
Cannot erase SD card with Disk Utility (El Capitan)
A better and simpler solution would be using the command-line.
Execute the following command to identify the mount name of SD card following the pattern /dev/diskX, e.g., /dev/disk2
diskutil list
...
- 371
16
votes
Can't reformat SD card (Yosemite)
I had the same exact problem. Format your card using this application: https://www.sdcard.org/downloads/formatter_4/index.html
Worked perfect for me.
Cheers.
- 239
13
votes
My SD card is not showing up in Finder
In my case it did not show up because the name was blank. I use disk utility to name it.
- 129
13
votes
How to remove partition on SD card using a Mac?
Assuming Disk Utility doesn't work, try formatting the card using the SD Association's official formatting utility. It may seem a bit silly to download a program just for formatting SD cards, but I've ...
- 7,706
11
votes
Accepted
How to hard format sd card on macOS?
This will erase all data* that currently exists on the SD card:
Remove your SD card.
Open Disk Utility.
In the menu bar, click [View] > [Show All Devices].
Insert your SD card, ensuring the write-...
- 1,295
10
votes
Disk Utility cannot erase USB drive (error -69877: couldn't open device)
This is an attempt to write a canonical QA for this issue, as per the Meta post: Where is the list of canonical questions stored for Ask Different? This answer is based off a number of pre-existing ...
- 104k
8
votes
How to remove partition on SD card using a Mac?
I'll try a short step by step method:
Open Terminal.
Enter:
diskutil list
find the device identifier of the memory card, it will be smthg like /dev/diskX
The format command is:
diskutil ...
- 81
8
votes
Accepted
f3 Fight Flash Fraud: "f3probe command not found" Mac OS Mojave
brew install f3 installs the two commands f3read and f3write into /usr/local/bin (but no f3probe).
From the README:
make extra
.. note::
- The extra applications are only compiled and tested ...
- 104k
7
votes
Cannot erase SD card with Disk Utility (El Capitan)
I had the same exact problem. Format your card using this application: https://www.sdcard.org/downloads/formatter_4/index.html
Worked perfect for me.
Cheers.
- 239
7
votes
How to remove partition on SD card using a Mac?
Using Terminal:
diskutil list
diskutil unmountDisk /dev/diskX (X is number of disk from step 1)
sudo dd if=/dev/urandom of=/dev/diskX bs=1000000 (X is number of disk from step 1)
Then wait! You ...
7
votes
Accepted
How to eject a unmounted disk?
You can either use diskutil eject /dev/diskN, or in Disk Utility.app you can select the disk and choose File menu > Eject (Command-E).
- 34.3k
6
votes
Accepted
Can't format samsung 128 evo micro sd card
In the half-dozen or so instances where I've seen this specific error, the micro SD card itself had gone bad and couldn't be formatted on Mac, Windows or Android (via OTG), even with different card ...
- 175
5
votes
anything better than dd to copy disk images to SD card in OS X?
I use Balana Etcher for my Raspberry Pi SD cards. It's free, fast and even verifies. It's also cross platform.
- 12.4k
4
votes
SD card slot is always read-only
I tried all other solutions but it didn't work.
I have a Macbook Pro Early 2011 15" (the line that has graphic card problem!)
My solution was to just push the card in as quick as I could possibly ...
- 141
4
votes
SD card slot is always read-only
@ Gordo’s answer (in toto)
Slide the read/write lock to the middle neutral position and retry. I have the same problem sometimes...
has been codified and explained. From bartech.tv's 2016 article ...
- 1,773
4
votes
My SD card is not showing up in Finder
I ran disk utility and ran first aid on my main ssd disk and the sd card popped back into existence.
Might have just gotten lucky but I tried everything else here and it didn't work.
4
votes
Stop automatically opening Photos.app when inserting formatted SD card
Image Capture manages which app is launched for a device. You can disable this functionality entirely by running the following then logging out:
defaults write com.apple.ImageCapture disableHotPlug -...
grg♦
- 206k
4
votes
Can I move Xcode and Android Studio to SD card
Can you? Yes.
Is it wise? Perhaps not.
Flash storage is notoriously frail. Once it fails, that's, it, it's gone, usually taking everything on there with it.
The adage "Any data not stored in at ...
- 118k
4
votes
Accepted
Unable to partition a SDXC card using Disk Utility
It will probably be supplied as MBR, so you need to Erase first.
Partition doesn't let you change the underlying Partition Map format, MBR->GUID
- 118k
4
votes
Accepted
Since update to Mojave SD card disappears after sleep
So its a problem with disk sleep. Actually the one have to disable it manually. In Terminal type: sudo pmset -g and than sudo pmset -a disksleep 1410065408.
- 61
4
votes
Accepted
MacOS 10.15.4 automatic eject sdcard when goes to sleep
Finally I found what my problem it is I open console.app and filter with /dev/disk2 and found out transcend helper eject my disk so I uninstall app and delete helper tools and then reboot.
Command to ...
- 171
4
votes
Accepted
Compatibility of SD-Card-Readers with iPads or iPhones
Is there any reason why this SD-Card-Reader would not be compatible with Iphones and Ipads besides the obvious physical USB-A-connection issue ...
Just because a product doesn't mention that it is ...
- 1,887
3
votes
Formatting SD card as FAT32 on Mac?
partitionDisk wants the entire drive as its target, because it's about to erase all partitions & replace with your new parameters.
/dev/disk2s1 is your existing 1st partition on that drive, disk2 ...
- 118k
3
votes
Can't reformat SD card (Yosemite)
I had the same issue on an iMac, Michelle mentioned using an external SD reader solved her problem so I figured it didn't make sense for it to be an OSX related problem. tried the tape, tinfoil and ...
- 31
3
votes
Is it possible to override the SD Card write protection setting in software?
I have sacrificed a micro SD to SD adapter in order to see that there is no wire or lever going from the slider to the micro SD card, hence the protection it NOT in the card but in the reader.
Yet it ...
- 202
3
votes
Accepted
Is it possible to override the SD Card write protection setting in software?
No. You cannot override the write protection status of an SD Card via software.
The read/write status is handled by the firmware of the SD card host controller not by the driver. From Toshiba (...
- 104k
3
votes
Error -36 "some data can't be read or written" when copying files from SD card
Not true; it's a privacy issue with the xfat format. You can copy the files via terminal: mv plus space, drag the file, plus drag the destiny. If that doesn't work, you'll have to change the format of ...
- 31
3
votes
Can I move Xcode and Android Studio to SD card
Yes, you can move these apps to SDCard by directly dragging these from your Applications directory to destination on your SD card.
Applications can generally run from anywhere. Some support files get ...
- 167
Only top scored, non community-wiki answers of a minimum length are eligible