Take the 2-minute tour ×
Ask Different is a question and answer site for power users of Apple hardware and software. It's 100% free, no registration required.

My Macbook Pro ran into a problem and reported Error: -50. I cannot open applications such as Chrome, Word, and others. I cannot download content or move content to the trash because it says the disk is full, even though it still shows 80Gb of free storage. The Ram is free and I cannot run ClamXav to see if it is a virus. Disk Utility verifies the disk but the permissions have all changed and cannot be repaired. Some permissions errors include "user differs on private/var/at, should be 0 user is 1"as well as various others. I cant even see/open external drives I connect. Any idea how to solve this problem?

share|improve this question
    
    
Finder error -50 when moving files from external NTFS hard disk (2012-08-11) has an accepted answer. Whilst that question is about NTFS, it's useful to consider the origins of -50 and the range of situations in which the error may present. –  Graham Perrin Apr 20 '13 at 7:41

1 Answer 1

-50 is a file system error: "Error in user parameter list" (see https://support.apple.com/kb/HT1618)

What OS X version are you on? https://support.apple.com/kb/HT4718 or Will reinstalling Lion erase all my documents and applications? maybe helpful.

share|improve this answer
    
+1 for drawing attention to HT1618 (outdated and archived but still, a useful point of reference for many things). Whilst the error relates to the file system, it does does not necessarily indicate a problem at the file system level. –  Graham Perrin Apr 20 '13 at 9:09

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.