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If you remove an external hard drive or a USB stick from the Mac without first disconnecting the drive, there may be data loss in the worst case – but at least the system will tell you to please be more careful in the future.
![using a windows format keyboard on mac eject disk using a windows format keyboard on mac eject disk](https://cdn.osxdaily.com/wp-content/uploads/2010/12/safely-eject-disk-mac.jpg)
Questions? Comments? Have a fix? Post them below or e-mail us!īe sure to check us out on Twitter and the CNET Mac forums.On macOS, ejecting USB drives is more or less an annoying chore.
![using a windows format keyboard on mac eject disk using a windows format keyboard on mac eject disk](https://i.stack.imgur.com/X1WPE.png)
If your drive is broken, then the easiest solution is to have it replaced.
![using a windows format keyboard on mac eject disk using a windows format keyboard on mac eject disk](https://2.bp.blogspot.com/-QV9kbkxabfI/VzCc-ERdz2I/AAAAAAAAM9U/giSLH23B0GEoELbyLNUt_fnfxuMvBbYVwCKgB/s1600/1.png)
As a mechanical device with feedback controls, the mechanics and sensors may also stop working as well as they did, resulting in the firmware getting hung up and refusing to work properly. Over time the drive's lens may become misaligned or the firmware may go bad. The final option is if the drive itself is broken. If this happens then your best bet is to try another batch of discs with your drive. This happens most often with burnable media, but may happen for commercial discs as well. In this case a whole stack of burnable discs may not work, but others from a different brand will. Manufacturers mass-produce optical media in batches, and every now and then a batch may be incompatible with a given drive for whatever reason. Beside gently cleaning the surface of the disc, you can use various resurfacing and disc reconditioning products to attempt to fix scratches and gouges in the disc's surface. Old discs (especially home-burned ones) may also experience degradation of the media over time that can result in the disc no longer reading properly. Like the lens, if the disc is dirty or has scratches on it that impede the tracks of data then the drive will also not be able to read it, and will eject it. To remedy this, you can try blowing compressed air into the drive in an attempt to dislodge any debris on the lens.
![using a windows format keyboard on mac eject disk using a windows format keyboard on mac eject disk](https://cdn.osxdaily.com/wp-content/uploads/2018/01/pc-keyboard-modifier-keys.jpg)
If this happens then most discs inserted into the drive will be ejected, including commercial discs. Over time a drive's lens may collect dust and debris, which can prevent the lens from reading properly. If your drive is ejecting discs, it can mean one of four possibilities:
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