HT206886: How to get macOS Sierra
Learn about How to get macOS Sierra
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Helpful answers
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Dec 16, 2015 12:48 PM in response to VillagerSLCby Allan Eckert,Start with a backup.
Fix any problems on your Mac prior to the upgrade. Doing an upgrade with problems only tends to make them worst.
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Dec 16, 2015 5:18 PM in response to VillagerSLCby a brody,Many printers are not fully supported under El Capitan. Check with your printer vendor, as Apple has not yet gotten updates from all the vendors. See my tip:
http://discussions.apple.com/docs/DOC-8811
And my FAQ*:
http://www.macmaps.com/printersx.html
Image Capture may no longer support certain scanners either. Agreed with backing up.
* Links to my pages may give me compensation.