refers to formatting, or erasing a disk, deleting all data on the disk

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Initialize 6 TB internal hard drive

I've found it both economical and flexible to use a docking station with internal hard drives (the ones that look "naked", i.e., have no plastic casing) for backups. I use this docking station to ...
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28 views

Windows formatted disks owned by $USER, while Mac formatted disks owned by “root”, right?

I noticed that some disks were owned by $USER and some by root: $ ls -l /Volumes total 88 drwxrwxrwx@ 1 jdoe staff 8192 Jul 14 10:22 USBdrive drwxrwxrwx 0 root wheel 0 Jul 14 15:54 ...
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17 views

Drive format for Sony Blu-ray

I formatted my drive from my Mac in FAT32. I'm using the drive on a Sony Blu-ray player (BDP-S5500. When I copied my files (movies) to the drive from my Mac, ._ was placed in front of each title and I ...
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1answer
20 views

How can I reformat a USB

I used by USB to add as iso file into it. sudo dd bs=4m if=my.iso of=/dev/disk1 Now I want to get the USB back to normal. but the erase button in Disk Utility is disabled. How can I reformat this
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41 views

Principal HDD doesn't appear in the list of disks to format

I'm using the recovery tools (from internet), but I can't format the internal 500GB HDD. Entering diskutil list in Terminal I get the following output: -bash-3.2# diskutil list /dev/disk0 #: ...
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2answers
72 views

Change drive “block size” to 4096

I just bought a 4tb hard drive and enclosure and attempted to encrypt it with truecrypt. I errored with a message saying the block size must be 4096 bytes for >2TB drive. How do i alter the drive to ...
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4answers
986 views

Pros and cons of wiping a new Mac?

Coming from the PC world, most made-to-order manufacturers (e.g., Dell, HP, Acer, etc.) all have annoying little addons which I consider spyware/bloatware--things like toolbars with ads. When buying ...
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1answer
36 views

Questions regarding disk format

I'm doing a fresh install of Yosemite on my mac, but stopped at format step: I noticed various options: plain format encrypted case sensitive So, I'd like to know: Is it possible to install ...
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1answer
57 views

MacBook 5,1 Upgrade, Leapfrog to Yosemite and MBA Backup

My 2014 MacBook Air was recently stolen, but I have a full backup available via Time Machine saved to an Airport Extreme base station. For now I'm using an old MacBook 5,1 with an Intel Core 2 Duo ...
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119 views

I get this error when running sudo dd if=/dev/zero of=/dev/rdisk# bs=64k in Terminal

I'm following the steps explained in this answer: sudo dd if=/dev/zero of=/dev/rdisk# bs=64k but get an error dd: /dev/rdisk2: Input/output error 1+0 records in 0+0 records out 0 bytes transferred ...
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1answer
32 views

MacBook Optimal Disk Formatting

What's the optimal formatting for a MacBook disk? My disk seems to be formatted as a LVG (Logical Volume Group) and it seems super slow...
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2answers
5k views

Formatting USB Disk As EXT3 On Mac

How can I format a USB disk as ext3 using OS X Yosemite? I want to use it on another system that is linux based but I wish to format it first before connecting to the linux system.
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118 views

USB key/disk not identified as a storage device

I have a 64GB USB key that I suddenly can do nothing with...I've tried both Mac and Windows diagnostics, as described below. At this stage I don't mind losing its data (99% of which was recently ...
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1answer
168 views

SSD formating trouble and mysterious disks

Two days ago suddenly Apple services started to fail on my Mavericks machine. I couldn't shut down (logind - or something like that - crashed but could not be force-quit). I shut down twice from ...
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1answer
33 views

disk become empty after delete a large file

I have a 2T mobile disk with the format of NTFS. I store 1T files on it, including a large file with the size of 260G. After I delete the large file, all the file was gone. I remount the disk again ...
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11 views

Is Time Machine enough to backup everything before format? [duplicate]

I am thinking to make clean install the Yosemite on my Mac. Before that I want to ensure that everything that is on my Mac will be restored manually by me. Note: I want to do a Clean Install BUT, I ...
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1answer
1k views

Failed to make bootable USB drive and now I can't even format it

I want to do a fresh install of Yosemite and I got a brand new 8GB flash drive and I followed this tutorial. I formatted the USB drive and was copying the Yosemite installer, however I got the ...
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28 views

Multiple images in Pages document

In a document created by Mac Pages, I need to insert three pdf files as different chapters. As it is not possible to insert them by a single command, I had inserted every page of these documents like ...
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1answer
158 views

How Do I Recover Formatted Mac hfs+ Partition?

I was installing Win8 on a Mac where I got the error that I can because of GPT disk I dont know what MAC I have but the Mainboard is number is Apple Mac 942859f58194171B. I tried formatting the ...
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3answers
56 views

2010 Mac Mini Downgrade

I have a 2010 Mac Mini with no DVD drive and a 5,400 RPM hard drive. Of late, it's begun to get quite sluggish, and I'm fairly sure it's the slow HDD that's to blame. I took a look at the means of ...
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2answers
134 views

Real performance boost with multiple partitions

I have a 1TB Hard drive with multiple partitions where I had previously installed Snow Leopard. Now I'm making a clean install of Mavericks and I have a couple of questions: 1) What are the real ...
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4answers
18k views

I can't write to my flash drive, and it is already in the MS-DOS (FAT) Format. Why?

This is my first question on this website. I am using a Mac Air, and I have a flash drive in which I can read from. I am able to copy files from this onto my Desktop, or anywhere on my computer for ...
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2answers
108 views

How to play AVI files on MacBook Pro

Using GoPro software, I had imported videos to PC. However when I bought a new macbook pro, I transferred all files onto an external Hard Drive. They are currently in .avi format. I am struggling to ...
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97 views

Used DiskMaker to create bootable USB, got error 10600, USB won't mount

I tried creating a bootable USB for Mavericks. Downloaded and used DiskMaker X. Got an error, -10660, and the app closed. Now my Mac won't mount (or recognize) the USB drive. It doesn't show up in ...
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1answer
651 views

Should I reformat a disk if Disk Utility asks me to?

I have a FAT32 external disc that was suddenly unmounted as I was using it. When I reconnected it and tried to Repair it in Disk Utility, I got the following messages: Verify and Repair volume ...
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169 views

Format SSD and restore TM backup

My SSD stopped mounting by itself on boot. So I booted into Single User mode, ran /sbin/mount/ -uw / and exit and it got mounted and I could boot from the SSD. However, after booting all I see is the ...
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2answers
8k views

View Time Machine backup drive on Windows 7

I use an external hard drive to regularly backup my Mac using Time Machine. However, I wanted to copy the data on this drive to a Windows 7 machine which does not work. It seems, that the PC ...
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58 views

Clone whole partitioning scheme to smaller disk

I have the following on my secondary disk. As I am not satisfied with it I would like to clone everything to the other one which is smaller unfortunately. /dev/disk2 #: TYPE ...
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1answer
9k views

External Seagate Hard drive for Mac - Compatibility

I am looking to purchase a Seagate External Hard Drive for my MacBook Air. The products claims it works only with PC (windows), however, I have read multiple places that I can just format the drive ...
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2answers
435 views

how to create a 128MB HFS+ partition using diskutil

I have a ~ 500GB disk in my new Mac, and I would like to create a 128MB HFS+ (Journaled) partition using OS X, but when I tried to do this earlier today the smallest HFS+ partition I could create was ...
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1answer
12k views

Stuck in a boot loop after failed update to Mavericks, can't reformat HDD

I recently tried to upgrade a 2008 Mac Pro from Snow Leopard (10.6.8) to Mavericks (10.9.2) using the free upgrade available in the App Store. The upgrade seemed to go without a hitch until the ...
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2answers
28k views

How can I let Windows XP read Mac OS Extended (Journaled) drives?

How can I let another PC using Windows XP (Service Pack3) read Mac OS Extended (Journaled) volumes? Windows XP shows nothing.
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1answer
147 views

Should I format and upgrade to mavericks or upgrade to mavericks and format?

I am planning to upgrade on a Unibody Macbook (2008) to Mavericks. Mountain Lion is already installed and I felt it to be a bit sluggish when I upgraded. I also would like to start anew and clear some ...
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4answers
6k views

How to erase and reformat SD card to ext3 on my macbook to prepare it for my raspberry pi

I'm trying to reformat my 32G SD card to prepare it for my raspberry pi. My GUI program on my mac does not allow me to format it to ext3 which is what i'm told to reformat it to for my raspberry pi. ...
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1answer
4k views

Disk Utility stuck around 50% when formatting SSD

I bought a SSD drive for my early MacbookPro 2011, since my old HDD was very slow and with crazy IO activity when idle. I started the Internet Recovery Mode and opened the Disk Utility to format the ...
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2k views

Difference in disk usage MS DOS vs Extended Journaled

Searches on Google and the Apple forums didn't get me any answers or couldn't clarify this for me, hence this question. I have two following external USB hard drives connected to my iMac: "Lacie1" ...
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2answers
534 views

Maverick's installation: Can i install Mavericks on a non-case-sensitive partition?

I'm trying to install photoshop on my iMac but it looks like I can't install Mavericks if I have a case-sensitive partition. Is it a known bug? Can I do anything to fix it?
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2answers
4k views

Error: “couldn't unmount disk” keeps coming up when formatting external HD to eXFat

I have a WD "my Passport" external HD that is currently formatted for a PC and I would like to format it to eXFAT. Every time I hit "erase" in disk util it just comes up with the error "couldn't ...
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2answers
3k views

Which format for external disk for performance?

I'm using OS X Mavericks and just got a new external hard disk. I don't need to share it with a PC (so no need for FAT) but I do want it to have better I/O performance. I'm a bit confused by the ...
2
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1answer
250 views

how to write to a windows formatted disk from OSx?

I have 4 external hard disk formatted on windows in NTFS, but they are lying unused since I bought mac, so I am looking forward somehow I should be able to write to those disc without having to format ...
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2answers
865 views

Unable to format pendrive, diskutil error

When I insert my USB Pendrive in my iMac i see this message: I tried to format it both with DiskUtility and with diskutil command in terminal but I get this error: iMac:~ User$ diskutil eraseVolume ...
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6answers
21k views

Disk Utility won't allow me to delete and resize partitions

I'm running OS X 10.9, and I had a linux partition when I updated from 10.8. Since I updated I can't boot on linux, which is no big deal for me. However, I would like to delete the partition that is ...
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3answers
3k views

How to format external drive into ZFS?

I've installed MacZFS, I've read the FAQ and Getting Started section, but I've still troubles to understand how to simply format the external drive into ZFS on OSX. I'm confused with zpools, can ...
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2answers
247 views

Does it make sense to buy a compatible Mac external disk?

What is the advantage of buying a compatible Mac external disk? Using Tuxera NTFS I can have an external disk for both, the windows partition (or any windows machine) as well as for the Mac one. Does ...
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1answer
3k views

Update OS X recovery USB stick with Mavericks

I've got a Snow Leopard 8GB USB stick that I got from my MacBook Air. Now that Mavericks is available, I'd like to update that USB stick with Mavericks. I can't seem to be able to format that disk: ...
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2answers
354 views

Delete and merge Partition

My MacBook's HDD has 2 partitions. One has OS X 10.8 installed, the other one 10.9. I'd like to delete the first partition and merge the free space afterwards to the 2nd partition. What's the easiest ...
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1answer
839 views

Is it bad to format your ssd many times?

In the past two years, I have formatted my SSD many times and I started to wonder, is it bad? Does it harm your SSD every time you format?
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59k views

How to format a disk to NTFS using Mac OS X

I am looking for a simple GUI based way to format drives to NTFS (Windows) on Mac OS X Snow Leopard.
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1answer
258 views

Seagate 4TB, 3,5" / SATA III (ST4000DM000) and SK-3500 Super-S Combo

I bought a 4TB 3.5", SATA III Seagate Desktop HD and put it into a SK-3500 Super-S Combo. My iMac (late 2009) did, however, not detect the HD when I connect it. Since I cannot see it, I am unable to ...
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263 views

Waiting for disks to reappear on SSD new install

I just installed a new Samsung SSD 840 PRO in an Early 2011 Macbook Pro, trying to format drive and it is stuck on: "Waiting for disks to reappear" What should I do now?