'''Computers do not "recognize" drives (memory cards is essentially a thumb drive) due to [https://discussions.apple.com/docs/DOC-3631|formatting (MBD) issues]. '''
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''That neither a PC or a Mac can read the format could be caused by a camera writing a damaged format, or the card being damaged''. The only other possibility for why a Mac could not read a format is that it is formatted NTFS by Windows older Mac's can not read this format - new Mac's can read- but not write to this format. '''Never erase or format a camera card on a computer''' ''that must be accomplished in the camera only, by the camera's software/OS'' or your risk making the card unusable by the camera.
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''That neither a PC or a Mac can read the format could be caused by a camera writing a proprietary format, or the card being damaged''. The only other possibility for why a Mac could not read a format is that it is formatted NTFS by Windows older Mac's can not read this format - new Mac's can read- but not write to this format. '''Never erase or format a camera card on a computer''' ''that must be accomplished in the camera only, by the camera's software/OS'' or your risk making the card unusable by the camera.
''If this answer is acceptable '''please remember to return and mark it'''.''
'''Computers do not "recognize" drives (memory cards is essentially a thumb drive) due to [https://discussions.apple.com/docs/DOC-3631|formatting (MBD) issues]. '''
''That neither a PC or a Mac can read the format could be caused by a camera writing a damaged format, or the card being damaged''. The only other possibility for why a Mac could not read a format is that it is formatted NTFS by Windows older Mac's can not read this format - new Mac's can read- but not write to this format. '''Never erase or format a camera card on a computer''' ''that must be accomplished in the camera only, by the camera's software/OS'' or your risk making the card unusable by the camera.
''If this answer is acceptable '''please remember to return and mark it'''.''