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Reformatting a USB drive
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<blockquote data-quote="chscag" data-source="post: 1096387" data-attributes="member: 46727"><p>The only issue you'll run into using Disk Utility to format a USB or any external drive to FAT-32 is if you do not use the correct formatting procedure. Disk Utility will default to formatting FAT-32 (MS DOS) as GUID. That's not good because it creates a small 200 MB EFI partition on the drive in the process. That will usually cause a Windows machine to only "see" that first small EFI partition and not the rest of the drive. I have had this happen to me several times.</p><p></p><p>When formatting any drive to FAT-32 using Disk Utility, always select the MBR choice. No 200 MB EFI partition will be created then.</p><p></p><p>Regards.</p></blockquote><p></p>
[QUOTE="chscag, post: 1096387, member: 46727"] The only issue you'll run into using Disk Utility to format a USB or any external drive to FAT-32 is if you do not use the correct formatting procedure. Disk Utility will default to formatting FAT-32 (MS DOS) as GUID. That's not good because it creates a small 200 MB EFI partition on the drive in the process. That will usually cause a Windows machine to only "see" that first small EFI partition and not the rest of the drive. I have had this happen to me several times. When formatting any drive to FAT-32 using Disk Utility, always select the MBR choice. No 200 MB EFI partition will be created then. Regards. [/QUOTE]
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