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Apple Computing Products:
macOS - Apps and Programs
Can't reformat USB flash drive - disk won't unmount
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<blockquote data-quote="IWT" data-source="post: 1816492" data-attributes="member: 83420"><p>Hi krs</p><p></p><p>I hope I'm understanding you.</p><p></p><p>Your 32GB USM mounts okay?</p><p>You then open Disk Utility (DU), see the USB?</p><p></p><p>Now, then you want to reformat the USB, are you clicking on the Main volume or the indent beneath it? As in the screenshot below, are you clicking on "USB Flash Memory" or the indent "IWT"?</p><p></p><p>[ATTACH=full]29519[/ATTACH]</p><p></p><p>This makes a difference. It should be the "IWT" indent.</p><p></p><p>Then try the reformat.</p><p></p><p>Then "Unmount".</p><p></p><p>Please post back.</p><p></p><p>Ian</p></blockquote><p></p>
[QUOTE="IWT, post: 1816492, member: 83420"] Hi krs I hope I'm understanding you. Your 32GB USM mounts okay? You then open Disk Utility (DU), see the USB? Now, then you want to reformat the USB, are you clicking on the Main volume or the indent beneath it? As in the screenshot below, are you clicking on "USB Flash Memory" or the indent "IWT"? [ATTACH=FULL]29519[/ATTACH] This makes a difference. It should be the "IWT" indent. Then try the reformat. Then "Unmount". Please post back. Ian [/QUOTE]
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Apple Computing Products:
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Can't reformat USB flash drive - disk won't unmount
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