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

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3
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2answers
2k views

How do I pass the following error message in the Boot Camp Assistant: “Please format the USB drive as single FAT partition.”?

I am running the Boot Camp Assistant on El Capitan. Whenever I reach the third screen, titled "Save Windows Support Software", on which I can select an storage medium to save the Windows support ...
0
votes
1answer
148 views

How should I properly format my iPod nano 5th generation?

I've been the happy owner of an iPod nano 5th gen, 8Gb for a few years. Over the years, I've added and deleted many songs, lyrics, album art, etcetera, and I recently assumed that something was ...
3
votes
2answers
6k 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 ...
2
votes
1answer
2k 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 ...
0
votes
0answers
11 views

Why is my OS install taking 8 days and still at 0%?

My problem is what the title says. It's a fresh install. I formatted the hard-drive before I began. I'm down-loading from interwebz; no USB. It says I'm connected to the correct WI-FI. I've tried ...
2
votes
5answers
58k 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 ...
2
votes
1answer
2k 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 ...
0
votes
1answer
26 views

External Hard Drive Size Problem

I recently bought a 4 TB Seagate Desktop Expansion external hard drive. However, after formatting it with Disk Utility the device still says 4 TB but the capacity says 1.8 TB. What is going on?
1
vote
1answer
54 views

Cannot format SSD to OS X Extended (Journaled) in order to restore

yesterday my computer stayed awake during all night, when I woke up it stopped working. I got many errors, one that says for example that I don't have enough space in my computer even though that when ...
0
votes
1answer
14 views

Macbook pro internal HD not detected

I had a problem with my bootcamped MBP and I tried to format the HD. I wasn't able to format any of the partitions so I tried the following based on https://www.macissues.com/2014/04/05/how-to-fix-...
6
votes
4answers
26k 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.
2
votes
1answer
398 views

How to write to a Windows formatted disk from OS X?

I have 4 external hard disk formatted on Windows as NTFS, but they are lying unused since I bought a Mac. So I am looking forward somehow I should be able to write to those disc without having to ...
0
votes
0answers
6 views

Problems formatting a disk -

I followed the steps of Michael Yasumoto bellow: Why can't I write to the last block of my SDXC card on my MBP? The terminal respond with this error: dd: /dev/rdisk2: Input/output error 1+0 ...
2
votes
1answer
505 views

Cannot erase SD card with Disk Utility (El Capitan)

I have this SD card that I am trying to use to backup photos on a Windows computer. After using the SD card on the Windows computer, and copying the photos back on a safe drive, I cannot erase the SD ...
17
votes
4answers
1k 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 ...
1
vote
1answer
101 views

Erase USB in Disk Utility says “Permission denied”

I'm trying to format my USB so I can get all the space back onto it, but every time I try to erase it in Disk Utility, this comes up: POSIX reports: The operation couldn’t be completed. Permission ...
3
votes
1answer
463 views

USB Drives always need to be formatted to delete items

I have a MacBook Air running Lion. Issue is I cannot delete things from USB sticks. The icons disappear but if I try to copy something on I get a not enough space error message. I can format the ...
3
votes
1answer
83 views

Reformatting disk with no partition map

I have a 250GB hard drive that I tried to "burn" an ISO to (to make it bootable). Something went terribly wrong.This is what the disk looks like in Disk Utility (unmounted). When I mount it, this ...
22
votes
5answers
13k views

HFS+ case-sensitive or case-insensitive — which type to use for the primary drive partition?

What reasons are there for choosing the case-insensitive version of HFS+ when formatting the primary drive partition? Would case-sensitive not always be the best choice?
2
votes
5answers
10k 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. ...
3
votes
10answers
35k 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 ...
2
votes
1answer
23k 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 ...
0
votes
1answer
68 views

Can an HFS+ formatted drive be shared with Windows

I have a Mac Mini that I'm using as a media server. I just put together an external RAID enclosure and I'd like to format it as HFS+, primarily so I can use it for Time Machine backups. 75% of ...
1
vote
1answer
274 views

How can I fix Error: -69877: Couldn't open device after interrupted formatting process?

This question, possibly the same question, has been asked: Couldn't open device However, my question hopefully demonstrates a more specific scenario as the situation in which caused the error ...
2
votes
3answers
19k views

Changing a Volume's “Device / Media Name”

I know a Mac volume can be renamed... obviously. But if you look at the output of diskutil you will see that a volume also has a "device name" that corresponds to the name it was given when it was ...
0
votes
0answers
20 views

How can I format a USB drive on a Mac so that it works on all old PCs as well? [duplicate]

I've tried FAT32 but old PCs won't read it. I could try NTFS but then Macs would treat it as read-only. I'm pretty sure I've seen USB sticks that work on Macs and PCs but I don't have any to hand so ...
1
vote
2answers
10k views

How to partition an SSD that fails with error 69888 - couldn't unmount disk?

I erased the SSD drive in my MacBook and was reinstalling Lion when it failed about 75% through the install. Now in Disk Utility, sometimes I see the SSD drive and sometimes I boot and it's not there ...
2
votes
2answers
311 views

JPEG XR support

What kind of support does OSX have for JPEG XR (also known as HD Photo)? I know that there is a Photoshop plugin for it, but are there any other forms of support such as an image preview or other ...
3
votes
1answer
260 views

Are all installations of OS X (10.8+) Case Insensitive (by default)?

I'm going to be getting a refurbished machine and rather than keep my current OS (10.6.8), I need to upgrade to at least 10.8, in order to be able to communicate with devices that use iOS 9 (since you ...
9
votes
5answers
631 views

Portable encrypted USB stick

I would like to have an encrypted USB stick that I can use with Windows and OS X. I could format it as FAT32 and then have a encrypted image files (more than one due to the file size limitation of ...
4
votes
1answer
170 views

MacBook does not mount, does not boot, does not read drive

When i press alt on my MacBook during startup, it only shows a disk that i used to have Windows installed (which is now empty). I erased that disk when i was last logged in on OS X. Then i tried to ...
0
votes
0answers
51 views

MacPro internal HD unreadable when moved to external USB Dock - and vice-versa

Since I just installed a NAS, and I want to transfer several TB from my Mac Pro's internal hard disks (4 of them), I wanted to make it faster by connecting those hard disks directly to the NAS using ...
1
vote
1answer
268 views

Can I set up Contacts phone numbers format

iPad iOS 9. I use AT&T. iPad Air 2 I spend a lot of time in Mexico where the phone number format is completely different from the one in the States, and in Contacts. Also, Contacts will not let ...
3
votes
2answers
6k views

How can I reformat my hard-drive?

I am in Disk Utility under the Erase Tab. The Format section is grayed out even though I have my main disk selected. The only buttons active are Erase Free Space, but I want to reformat the entire ...
10
votes
2answers
117k 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.
0
votes
0answers
16 views

Selling old Macbook pro 1,1, need to re-format the drive

I have an old MacBook pro currently running snow leopard. I have a time-machine back up disk, but is there a way to reformat everything, leave the OS on the machine, then sell it? The original snow-...
34
votes
3answers
20k views

What are the differences between journaling HFS+ and non-journaling HFS+?

I'm about to format an external hard disk drive (HDD). What are the key differences between journaling HFS+ and non-journaling HFS+? Apart from the fact that one has journaling and the other does not,...
0
votes
1answer
402 views

Change MacBook Pro OS X Apple ID ownership [duplicate]

Over a year ago I bought a second hand MacBook Pro on ebay. Unfortunately the original owner did not reinstall the operating system and in fact it came together with Photoshop and Microsoft Office. ...
1
vote
1answer
22 views

why are my iPhone4 videos different in size?

Some videos I take are square and 640 x 480, while others are 1920 x 1080, data rate changes with size as well, so quality is much better on the larger size - seems to be random - how do i set the ...
0
votes
0answers
41 views

Are slow format speeds indicative of more severe hard drive problems?

I have an mid-2011 iMac, that has 4GB of RAM and a 500GB HDD (not SSD). Over the past few months I have experienced: Fairly frequent beach balls/general system slowdowns A worrying number of errors ...
14
votes
5answers
51k views

How do I make a bootable USB flash drive a Mac?

Does anyone have a Terminal command-line recipe for making a new bootable USB flash drive for one of the new MacBook Air's? Is there a way to dd copy the USB boot device that comes in the box and ...
0
votes
0answers
79 views

Repair Disk failed

I try to repair a disk because my Mac still is on grey screen during start. I created a USB Yosemite bootable and I can use Terminal. I tried with: diskutil repairvolume disk0s2 But I get the ...
2
votes
1answer
167 views

Find specific attached disk, not volume, by Applescript

I have a script I use to format any inserted SD card, copy data from specific folders to it, then eject. Each format/copy is triggered manually, as part of a batch process involving maybe a hundred ...
0
votes
0answers
446 views

Unable to format external HDD

When creating a partition with GUID Partition Map Scheme in Disk Utility, I'm getting "Partition failed with the error: Unable to write to the last block of the device". Same message when I try to ...
0
votes
1answer
42 views

I am trying to erase and reformat drive with snow leopard, but don't have the install DVD

I have a 2009 MacBook Pro running Snow Leopard, and I'm selling it to someone. Want to erase and reformat the drive but I don't have the Snow Leopard Install DVD. Is there any way to do this?
0
votes
1answer
349 views

How to recover from accidently diskpart'ing an OS X drive, destroying everything?

Ok, so, I just got my Mac back after 5 months in the repair shop. I went to install winblows 7 via Boot Camp Assistant, but was having issues. I went into diskpart, and not remembering how to use it, ...
0
votes
2answers
3k 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" ...
0
votes
1answer
699 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 “...
0
votes
1answer
66 views

Tried to reinstall osX and ended up getting folder with questionmark on boot

Today I decided after 6 years to format my MacBook Pro 2009 laptop. Originally I had Snow Leopard on it (I still have an unscratched cd) but in some point back in 2012 a friend installed (using his ...
0
votes
1answer
440 views

Apple MacBook Pro 2013 with 512Gb SSD cannot install OS X

I had an issue running an App and the vendor suggested I should revert to the earlier OS X 10.10.3. I located on Time Machine the backup version I needed, waited for the format and restore. I then ...