balenaEtcher is the best option for most users to write images to SD cards.
Note: The use of the
dd
tool can overwrite any partition of your machine. If you specify the wrong device in the instructions, you could overwrite your primary Mac OS partition!Determine SD device
- Insert the SD card in the slot or connect the SD card reader with the SD card inside.
diskutil list
or- From the Apple menu, choose 'System Report', then click on 'More info...'.
- Click on 'USB' (or 'Card Reader' if you are using a built-in SD card reader), then search for your SD card in the upper right section of the window. Click on it, then search for the BSD name in the lower right section. It is in the form
diskN
(for example,disk4
). Record this name. - using Disk Utility, unmount the partition. Do not eject it.
![Ddpb Installer Mac Os X Ddpb Installer Mac Os X](/uploads/1/2/5/8/125876100/379176774.jpg)
Upgrade from OS X v10.9 Mavericks to OS X Yosemite If your Mac can run OS X Mavericks, it can run OS X Yosemite. Back up your Mac. Get OS X Yosemite from the Mac App Store. Double-click Install OS X Yosemite to begin installation.
Copy the image
- From Terminal, enter:Replace
N
with the number that you noted before.This can take more than 15 minutes, depending on the image file size. Check the progress by pressing Ctrl+T.If the command reportsdd: bs: illegal numeric value
, change the block sizebs=1m
tobs=1M
.If the command reportsdd: /dev/rdisk2: Operation not permitted
you need to disable SIP before continuing.If the command reports the errordd: /dev/rdisk3: Permission denied
, the partition table of the SD card is being protected against being overwritten by Mac OS. Erase the SD card's partition table using this command:That command will also set the permissions on the device to allow writing. Now issue thedd
command again.