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How to restore unreadable USB flash drive under Mac OS X
Today I found that I can’t access to my 8Gb USB flash drive. I can find it in Finder, but the System gets stuck while accessing to it. What to do? If you want to recover data from a USB flash it’s better to stop reading this post now and continue googling “USB flash data recovery” or something. Here’s a step-by-step instruction how to make your USB flash drive work again under Mac OS X.
1. Open Terminal and go to /dev
$ cd /dev
2. Now it’s time to find your flash drive in /dev. Typically it’s /dev/diskN where N could be 0, 1, 2, 3, etc
$ diskutil list /dev/disk0 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *121.3 GB disk0 1: EFI 209.7 MB disk0s1 2: Apple_HFS Macintosh HD 120.5 GB disk0s2 3: Apple_Boot Recovery HD 650.0 MB disk0s3 /dev/disk3 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *8.1 GB disk3 1: EFI 209.7 MB disk3s1 2: Microsoft Basic Data KB 7.9 GB disk3s2
OK! It’s disk number 3, i.e. /dev/disk3 Remember the name of partition (it’s KB in my case). Your flash drive is mounted as /Volumes/NAME Continue reading »
How to add Java sources and docs to your JDK on Mac OS X
Every time I setup a new Mac OS X virtual machine with Java on board I can’t find java sources (src.zip or src.jar files). Here is a short instruction how to setup JDK with the sources and documentation on Mac OS X.
- Go to https://developer.apple.com/downloads and sing in.
- Search for ‘java developer’ or simply click https://developer.apple.com/downloads?q=java%20developer
- Choose the latest build labeled Java for OS X 201X-0YZ Developer Package where X, Y, Z may vary.
- Add this JDK to your IDE as you usually do. If sources are not attached automatically, attach them manually. Here is the path to src.jar
/Library/Java/JavaVirtualMachines/1.6.0_XX-XXX-XXX.jdk/Contents/Home/src.jar
where XX may vary from version to version.
