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Create HFS+ and FAT32 partitions on one external drive.
Authored by: silentaccord on Apr 11, '05 07:19:05AM

I tried your procedure and had a few problems.

In step 2), the output I get from "diskutil list /dev/disk1" is nothing like your example. I just ignored it and continued.

In step 6), can you be specific about what commands you used to create the DOS partition table? Since I'm not familiar with fdisk, I used "diskutil partitionDisk" with the MBRFormat argument. Is this acceptable?

In step 10), I can't seem to write back to the partition table:
dd: /dev/rdisk1: Invalid argument
0+1 records in
0+0 records out
0 bytes transferred in 0.002190 secs (0 bytes/sec)



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Create HFS+ and FAT32 partitions on one external drive.
Authored by: dstrelau on Jun 14, '05 06:24:58PM

I don't have a Wintel machine to test it on at the moment, but I think I got this working. The partition table shows up in both pdisk and fdisk and both partitions (I created an HFS+ and a FAT32) show up on my Mac.

I'm guessing that diskutil with MBRFormat should be okay, but I did use fdisk. It's pretty easy if you just use the 'help' and '?' commands.

My disk gave the same 'Invalid Argument' complaint. I found that after fdisking, it had changed from /dev/rdisk1 to /dev/rdisk2 -- strange. Also, even when I put in the correct disk number, I still got 'Invalid Argument,' except this time, the drives remounted and the write light on the drive flashed.



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