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8

When using OS X, it's usually more advisable to use diskutil for disk-related activities. TL;DR: To mount a volume/disk by identifier: diskutil mount /dev/diskXsY # mounts just that volume diskutil mountDisk /dev/diskX # mounts the whole disk To mount a volume by UUID: diskutil mount [Volume/Partition UUID] To mount a volume by label: ...


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The secure erase feature indeed seems to be gone (or it's a bug). Open Terminal and enter diskutil list to see a list of your attached drives. In the following example, notice a pair of drives are identified: /dev/disk0 (internal) and /dev/disk2 (external) - disk1 is related with the Apple CoreStorage partition disk0s2. your_prompt_here% diskutil list ...


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I suspect that your hard drive is in the process of crashing. I am basing my reasoning off this statement: My OS is corrupted, that is the reason why I want to do a fresh installation. With corrupted I mean, I can boot my system only if I go to single-mode and mount the hard drive with mount -uw / and then exit. But this is not a long term ...


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You can try entering in Single User Mode and do an fsck on the hard drive. To enter single user mode, turn on your computer and immediately after press the Command s. This will load you to a terminal looking screen. Let it run its pre-checks. After it is done there should be two commands to run: a command to mount the drive a command to run fsck on ...


1

To most easily resolve this, you need to erase your USB drive with a "Master Boot Record" scheme. Steps: Open Disk Utility Select the USB drive Click "Erase" Choose Format "MS-DOS (FAT)" MOST IMPORTANT: Choose Scheme "Master Boot Record" Click Erase button Many thanks to nholtappels for figuring out the problem!


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I have made a fork of fuse-ext2 which installs everything in /Library and /usr/local, so that you don't have to disable SIP in Mac OS X El Capitan. Glad if you try it ;-).


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The use of Core Storage seems to be a common denominator in problems similar to mine. I used the sudo diskutil cs revert [Logical Volume guid] command in the Terminal application to get rid of Core Storage, and then restarted. Presto! My missing GBs were returned. The above command can only be used if the command diskutil cs list shows the Logical ...


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To correct the GUID error in your GPT, you need to start up from OS X Recovery over the Internet. Press and hold the command(⌘)optionR keys immediately after you turn on your Mac and hear the startup sound. For more information see the site: OS X: About OS X Recovery. Once started to OS X Recovery, select the Terminal application from the menu bar. Enter the ...


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You can use Unetbootin to copy the Linux ISO to 1.2GB partition(disk4s3). If I were you though I would first rewrite the partition type as GPT instead of APM by running: diskutil partitionDisk disk4 GPT fat32 Linux 10% ExFat d2 10% ExFat d3 80% Then select the Linux partition on disk4 in UNetbootin to be the destination for the ISO copy.


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Probably the upgrade to El Capitan and the conversion of your main OS X volume (disk0s2) to a CoreStorage volume (disk0s2 & disk1) wreak havoc with the GUID partition table entry of your Boot Camp partition. You partition table should look similar to this one: ... 325312736 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC 326582272 ...



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