Discover Top Posts Tagged with #corestorage

Options for securing external storage in OS X

The default approach for storing files on drives other than your boot drive is to get an external storage device and then copy your files to it; however, by doing so you leave open the possibility of someone getting your drive and accessing your data. To secure the files you place on such drives, there are several approaches you can take, including encrypting files or the drive itself, and using…

View On WordPress

#AppleRAID #CoreStorage #disk drive #Hard Drive #RAID

How to partition a hard drive in OS X using Core Storage

When you set up an external drive for use with your Mac, you may wish to partition it for various uses. For instance, you might want to isolate automatic Time Machine backups from manual ones. The classic way to do this on a single drive is to use Disk Utility to partition it, where you split the drive into two or more logical volumes that the system sees as separate file systems. Since OS X…

View On WordPress

#CoreStorage #Hard Drive #partition #storage #volume

Ugly..

csTest=`/usr/sbin/diskutil cs list` cdApp="/Library/Application Support/cocoaDialog/cocoaDialog.app/Contents/MacOS/cocoaDialog" cdTitle="!! WARNING !!" cdText="Halting: CoreStorage LVG Found" cdInfoText="Sorry, I can't continue... I've found a CoreStorage volume and don't know how to deal with that (yet). You have the choice of Quitting the app, or opening Disk Utility."

if [ "${csTest}" = "No CoreStorage logical volume groups found" ]; then open -a "NukeDriveWrapper" exit 0 else duWarn=`"${cdApp}" msgbox --icon hazard --title "$cdTitle" --text "$cdText" --informative-text "$cdInfoText" --float --button1 "Quit" --button2 "Open Disk Utility"` if [ $duWarn -eq 1 ]; then echo $duWarn exit 0 elif [ $duWarn -eq 2 ]; then open -a "Disk Utility" echo $duWarn exit 0 else echo "UNKNOWN ERROR" exit 1 fi fi

#ugly #shell script #os x #CoreStorage #LVG #LVM

Error: -69853: Boot file not written

So, I was trying to convert the regular JHFS+ volume into a CoreStorage LV and got this error message.

After some digging, I found out OS X was likely trying to rebuild the kernel extension cache on the volume and was failing. If you are getting this message, you should ensure your kext cache can be rebuilt without errors (try running kextcache utility in the terminal). 3rd party drivers can cause problems, so you should move them out of the way temporarily. If you are trying to convert/encrypt a secondary (external) drive that was cloned from your primary drive, and you don't care about booting from there, you can just nuke the /System folder on that drive.

#mac osx #macos #corestorage

Partitioning without Disk Utility Mac OS X

I was having major problems creating a new partition for OS X Mavericks. Disk Utility was no help…

I used command line disk util + core storage to list the Volume group and resize the current partition

I shaved off a few gig to free up space in the volume group for my new partition

Now I create a new partition for Mavericks

Final layout …

#mavericks #osx #diskutility #corestorage #apple #partition

体验一下传说中的Fusion Drive

嗯，先要感谢http://jollyjinx.tumblr.com/ 提供的基本方法，下面是体验的操作过程：

前置信息：这台机器是Hackintosh , 所以无法体验从Fusion Drive 启动；SSD是 AIR上用的SSD, 256G 三星版本

Step 0 : 使用 Diskutil.app 给SSD分出一个分区出来我选了64G, 如果想直接用它做系统的话，那请备份机械硬盘及SSD硬盘上面的数据，因为目前CoreStorage的操作命令 addDisk （别找了，man page里面没有。。。）是不能用的，因此VG只能在创建的时候一次建好。

替换了光驱托架的Mac用户可以外接一块硬盘做好系统，并且从这块硬盘启动；当然也可以通过安装光盘启动。

Step 1 : 创建LVG

sudo diskutil cs create YourVGName yourSSDPartition yourHDDPartition

在这里， YourVGName 是你给VG起的名字 yourSSDPartition SSD设备名 yourHDDPartition HDD设备名。设备名不分前后顺序。我实际使用的命令为

sudo diskutil cs create FusionDisk disk0s3 disk1

一坨信息之后。。。创建LV

Step 2 : 检查逻辑卷

sudo diskutil cs list

这里是已经建好LV的截图，未创建LV时应该看到的是没有 Logical Volume Family 的输出结果，复制 Logical Volume Group 的UUID 并记下Free Space的大小，使用下面的命令创建LV

sudo diskutil cs createVolume LVGUUID jhfs+ LVName LVSize

其中LVGUUID 是刚才复制的UUID， jhfs+ 意思是开启了日志的HFS+ ，LVName是你要创建的卷名，LVSize是你刚才记下的Free Space 的大小，直接输入刚才的大小是不行的，要稍微减那么一点，至于具体是多少，咱懒得算了，因为日后可以通过一个隐藏的 diskutil cs resizeVolume LVUUID NewSize 命令对卷的大小进行修改

Step 3 : 因为本人的机器是台黑苹果，目前还没法从Fusion Drive启动，因此只能退而求其次，将日常使用的User Data迁移到 Fusion Drive上面，需要修改

/etc/auto_master 以及 /etc/fstab ，感兴趣的同学可以自行放狗搜之

Step 4 : 添充数据以验证Fusion Drive是否在工作