Need Instructions for Mac OS

Technical Support
5

Those are the instructions I have been (trying to) follow. But I don’t fully understand what they (are meant to) do so it is easy for me to do the wrong thing.

That is the first problem; I do not know for sure the right way to do this on Mac OS because your Linux instructions do not work for Mac.

When I run:

sudo fdisk /dev/disk6

This is what I get:

Disk: /dev/disk6	geometry: 968/255/63 [15564800 sectors]
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec [     start -       size]
------------------------------------------------------------------------
 1: 0E   16   0   1 - 1023   3  32 [      2048 -     131072] DOS FAT-16
 2: 83 1023   3  32 - 1023   3  32 [    133120 -    3256320] Linux files*
 3: 00    0   0   0 -    0   0   0 [         0 -          0] unused
 4: 00    0   0   0 -    0   0   0 [         0 -          0] unused

So I try to run this:

sudo fdisk -i -a dos /dev/disk6

And I get:

fdisk: /dev/disk6: Resource busy

So I try:

sudo diskutil eraseDisk FAT32 BOOT /dev/disk6

Now sudo fdisk /dev/disk6 gives me:

Disk: /dev/disk6	geometry: 968/255/63 [15564800 sectors]
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec [     start -       size]
------------------------------------------------------------------------
 1: EE 1023 254  63 - 1023 254  63 [         1 -     409639] <Unknown ID>
 2: 0B 1023 254  63 - 1023 254  63 [    411648 -   15151104] Win95 FAT-32
 3: 00    0   0   0 -    0   0   0 [         0 -          0] unused
 4: 00    0   0   0 -    0   0   0 [         0 -          0] unused

But that is multiple sectors so I think it is wrong?

So I try the Disk Utility.app and in the UI I format as MS-DOS (FAT)/Master Boot Record. Now sudo fdisk /dev/disk6 gives me:

Disk: /dev/disk6	geometry: 968/255/63 [15564800 sectors]
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec [     start -       size]
------------------------------------------------------------------------
 1: 0B 1023 254  63 - 1023 254  63 [         2 -   15564798] Win95 FAT-32
 2: 00    0   0   0 -    0   0   0 [         0 -          0] unused
 3: 00    0   0   0 -    0   0   0 [         0 -          0] unused
 4: 00    0   0   0 -    0   0   0 [         0 -          0] unused

Which looks like it may be correct? But I don’t know, because if I do this first step wrong I assume it won’t work no matter what I do after, correct?

So which of the above is how I should “Format the TF Card as Fat32?” from your instructions?