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Author dhalbert
Recipients dhalbert, gvanrossum, serhiy.storchaka, terry.reedy
Date 2019-05-07.04:03:04
SpamBayes Score -1.0
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Message-id <1557201785.01.0.385634464942.issue36807@roundup.psfhosted.org>
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Content 
I'm one of the CircuitPython core devs. This issue is OS-dependent: Windows and Linux don't necessarily write data and metadata out to USB drives promptly. The problem is particularly acute for FAT12 filesystems on Windows, which are typically 16MB or smaller: Windows can take up to 90 seconds to flush, due to a driver bug or perhaps some ancient concerns about floppy drives. MacOS doesn't have this issue.

See https://superuser.com/questions/1197897/windows-delays-writing-fat-table-on-small-usb-drive-despite-quick-removal/1203781 for details. We have contacted Microsoft about this but getting it fixed is a long-term and uncertain process.

I'll test on Windows when I return from PyCon. Thank you for the prompt fix!
History
Date User Action Args
2019-05-07 04:03:05dhalbertsetrecipients: + dhalbert, gvanrossum, terry.reedy, serhiy.storchaka
2019-05-07 04:03:05dhalbertsetmessageid: <1557201785.01.0.385634464942.issue36807@roundup.psfhosted.org>
2019-05-07 04:03:05dhalbertlinkissue36807 messages
2019-05-07 04:03:04dhalbertcreate