OS X :: Mac Can Only Read From External Hard Drive

Jul 6, 2009

I am sure this is a simple question, but I am having a problem going from windows to mac with an external hard drive. I can read and write to the drive on any windows PC. On my macbook pro laptop, I can only read. It will not let me write or erase anything to the drive. Does this have to do with the drives formatting? If so which format will let me both read and write on mac and pc?

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MacBook Pro :: External Hard Drive Went Read Only?

Apr 1, 2012

I have a Seagate FreeAgent GoFlex Desk external hard drive, which i've loaded movies, pictures, videos, and documents on to. I have only used up about 100GB of 1.5TB and for some reason when I plugged it in today it wont let me load anything onto it and if you click get info on it, it says you can only read.

Info:
MacBook Pro, Mac OS X (10.6.3), 13"

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OS X Mavericks :: External Hard Drive Won't Read On Old PC?

Aug 27, 2014

I have 2 external hard drives one specifically for mac the other is for either mac or Windows base PC.  I backed up on my mac using the time capsule back up now.  When I attach to a usb ion my windows PC it wont read or even pick up either external discs, is this normal.   How do I get files from my mac to windows based PC, it does work using a memory stick.  But why won't PC pick up the drives.

Info:
MacBook Pro with Retina display, OS X Mavericks (10.9.4)

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IMac :: External Hard Drive Constantly Being Read

Sep 5, 2010

For some reason my Lacie external drive that's hooked up to my imac is constantly being read for no reason. It's never idle and never rests until I eject it. I'm afraid the drive's gonna fail soon and all my work gone? Did a search but can't find anything online.

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MacBook :: Why Can't Read Or Write From My External Hard Drive

Mar 25, 2012

I recently borrowed my brother's laptop to use as a media station for listening to music from, and watching movies, in order to free up some space on my main macbook. In trying to migrate some files over, I discovered that my hard drive, a 320 GB WD Elements drive, is having some problems which I've never encountered before. It has always worked fine in the past, but now I can't transfer any files to or from it, from either computer.  In all of my troubleshooting, I've gotten various errors, (-36, -50), and various messages saying how the device can't be read or written from, or how some files contian unreadable data, etc.Disk Utility found an unused node when verifying the disk, and notified me that the disk needed to be repaired.I then used Disk Utility, which said it was able to successfully repair it, but the same problem remains, and after verifying the disk, it still says it needs to be repaired.I've tried to find any files that may be causing the problem, and was finally able to delete a seemingly troublesome file that was stuck in my trash bin from the external drive after trying various apps, (ie Trash It, Cocktail, What's Keeping Me?).This didn't end up solving anything...I've used terminal to eliminate some other potentially problematic files, with no luck still, and I'm not too confident with Terminal so I don't want to be messing around too much without more guidance.

I've used Disk Warrior to try to solve the problem, but still with no success.When I use the app to Check All Files and Folders, it does so for only a few seconds, then reports that "An unexpected error ocurred while attempting to perform file operations" for several files, and that several files' "Property list is damaged and cannot be repaired".  When using Disk Warrior to REBUILD the drive, the app pauses for about 15 seconds, then says that it can't be rebuilt because it is in use.Again, I've used the What's Keeping Me? app to kill any activity with the drive, and the same error occurs.I've spent a lot of time trying to sort this out.

Info:
MacBook, Mac OS X (10.7.3)

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MacBook Pro :: External Hard Drive Reverted To Read Only

Jun 22, 2012

My external hard drive has reverted back to it's read-only form after a few weeks of running fine using tuxera so I can use my hard drive with my mac. Now tuxera or similar programs don't even recognise the drive.

Info:
MacBook Pro (13-inch Early 2011)

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OS X :: External Hard Drive Folders Unlock To Read & Write?

Nov 14, 2010

I bought a Seagate Free Agent Go Flex External drive. I transferred all my files from my previous external HD.

When I went to access my folders on my external HD, the folders are all locked, with Sharing and Permission section in the Information "Everyone: Read" only! I can't change any of the information or move things! All of them are locked and "read only." I know how to change it, but only manually, individually. I have several hundreds of folders and I don't want to manually change all of them to "Read & Write." Is their a way to let me re-set the folders to "Read & Write" easily??

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MacBook Pro :: External Hard Drive Not Allowing To Read & Write?

May 21, 2012

I have an external hard drive(seagate 250 NTFS format) which i have used on my windows 7 computer now that i'm trying to load the information onto my macbook pro (10.7.4) it will not let me change the permissions nor duplicate the files. How can I be able to edit and save the information to my mac from the external drive??

Info:
MacBook Pro, Mac OS X (10.7.4)

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OS X :: IMac Won't Start Up - Error Message Saying External Hard Drive Could Not Read

Feb 7, 2010

Ok so I have an 8800 GS imac, 3.06 intel core 2, 4 gigs ram. Running snow lepord. I need to resolve an issue where I can not get into OSX. At first I got error messeges saying my external HDD could not read, now it looks like its my primary drive because when I restarted I got the progress bar under the apple logo, indicating that something is wrong with the OS. The bar when to full 100% but then I got stuck at never ending spinning wheel. I restarted and no more progress bar but still the spining wheel of death. I really dont mind refomrating its just that I had some important text documents and other files that I cant get back without recoving them some how. How to proceed? I held down cmd v or s (i forgot) on startup and got a black screen with several problem statements. One reads the system boot strapper has crashed trace BPT trap.

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OS X Mountain Lion :: External Seagate Hard Drive Just Changed To Read Only?

Dec 4, 2014

my External Seagate Hard drive just changed to read only on its own?

I went to get info and scrolled down to the  Sharing and Permissions

But there is nothing there but a greyed out : You can only read

There are No boxes to check or uncheck, No options to change to read and write, No name of owner or ignore ownership box. NOTHING ELSE IS THERE

I have recently upgraded to Mountain Lion and am having other problems as well

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PowerPC :: Hard To Read / Write To External Drives With G5

Sep 17, 2007

This issue has been killing my work flow for quite awhile. I have a G5 dual 2.0. I can barely read or write files to an external hard drive. Say I try and copy 1.56GB of audio (12 files) from my external drive it will start to copy then stop at 500mb for minutes then start moving as normal and stop again around 900 for minutes.. then again at 1.4. This also happens when writing.

Here is the confusing part. This happens with two external drives (different models) with firewire 400, 800 and USB. I have reinstall OSx. I have repaired permissions and ran repair disc on everything. These hard drives work FLAWLESS with my Macbook Pro as well. Gr what can this be? It takes forever to copy data to or from a drive which is often how I transfer audio between my desktop and laptop. I should soon have Mac Pro money and this crappy G5 can go out the window. I am on 10.4..

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PowerPC :: Unable To Read External Hard Drives

Mar 11, 2010

I can't read any external hard drive on my laptop, but both mine and my friends smaller 250g WD HD were visible on his mac.

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OS X V10.7 Lion :: Read And Write To External Hard Drives?

Apr 13, 2012

hey all, this has been really frustrating for me today. i want to be able to write to an external HDD that's formatted in NTFS. today i find out it isn't possible to write to this file system on a Mac and that on FAT32 it is possible. however, FAT32 can't address files larger than 4GB so this hurts me a lot. are there any other file systems that'll allow me to read and write from a Mac? my goal was to use freeNAS to build a NAS with an old tower and connect my external hard drives to it, but if i can't write to them this may not be possible. 

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OS X Mavericks :: Can't View Or Read External Hard Disk?

Jun 2, 2014

I reinstalled Mavericks 10.9.3 and now I can't view or read my external hard disk.

Info:
iMac (27-inch Mid 2011), OS X Mavericks (10.9.3)

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OS X :: External Hard Disk Changed From "Read And Write" To "Read Only"

Aug 12, 2010

I have an external Transcend HD, which has been working perfectly fine for around 5 months now. It is NTFS, and I use NTFS-3g and Macfuse. Been running fine. Was able to read and write. Suddenly I am only able to read though. I go into the "Get Info" pane and the option to choose whether I want to read and write, or read only is gone, and all that it says is "You can read only". getting this back to read and write is really appreciated. I really need this disk.

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OS X :: External Drive With Read Only Permissions

Jun 9, 2010

So I have an external drive that I want to be able to copy some files to. I use it for my Windows PC, and i have some of it set up for time machine too. When I plug it in, Documents, Pictures stuff show up. I can drag files off onto OS X but I cant drop other files on it. It says I only have READ permissions. How do I change this? Fully updated OS X SL.

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OS X V10.7 Lion :: External 2TB Drive Is 'read Only'?

Apr 12, 2012

i just bought a mac mini and everything seems to be running great. however, i plugged in a 2TB drive i used on my Windows 7 laptop and whenever i try to delete or add a file i get an error saying the drive is 'read only'. i've plugged in a USB thumb drive and this works fine. is there anything i can do? 

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MacBook Pro :: It Suddenly Won't Read My Hard Drive

Mar 24, 2012

My Macbook Pro suddenly won't read my 750GB WD Elements Hard drive.It was working earlier today but when I went to press play on my TV show in VLC it said the files couldn't be read. So i reopended them all and they still didn't work. I closed down all programs running that could possibly be using my hard drive but it said it was being used so I force ejected it and when I plugged it back in it didn't work.

It comes up with an error message "this disk can't be read by this computer" but it still shows up in disk utility. In disk utility though it says it is a 2.2TB hard drive which confuses me. also I the buttons for "verify disk" and "repair disk" are greyed out.

Info:MacBookPro, Mac OS X (10.6.7)

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OS X :: Old Mac Can't Read New Macbook Formatted External Drive?

Dec 27, 2010

I just got hit with a double whammy. :Imac running Panther did something odd to the it's external drive. That was formatted fat 32. I plan to see if anyone in the nearby computer repair class can recover those files, but in the meantime (days!) the gremlin also hit the macbook, putting it in range of a spill. So now the only backups I have are on the second external drive formatted with a mac format on the macbook. This one was done with 2 partitions, one for Time Machine, one for the stuff I was yanking over from the other hard drive.

So now I find that Imac can't even SEE the second drive. (Not that I expected it to see or recognize Time Machine, just the other part.) My macbook is on downtime until it gets checkup/cleaning (with all mac places nearby apparently closed thru New Years and classes I need it for starting right after) Does anyone know a way to get "Ye Old Imac" to see the other drive? Is there a driver or something? I know it's very hard to find older software (most online sites don't go back past Tiger), but it is a mac format for goodness sake! I can't even be 100% sure if it's something to do with a newer mac format for the external drive or "Ye Old Imac" is just being grumpy. It seems to see the other USB stuff but it has been known to lose touch with them.

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OS X :: External NTFS Drive Suddenly 'Read-Only'?

Aug 23, 2007

I have an external hard drive, it's formatted in NTFS, sort of like a 'bridge' between my Macbook and my Windows machine. I was able to write to the NTFS drive from my Mac using MacFUSE and NTFS-3G. A few days ago, the hard drive showed up as 'read-only', and is still that way now. I've tried repairing disk permissions, reinstalling the NTFS applications, nothing seems to change the write permissions back.

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Applications :: If I Delete Files Off My Internal Hard Drive, Will It Still Be On My External Hard Drive

Nov 12, 2009

if i delete files off my internal hard drive (Macintosh HD), will it still be on my external hard drive or will it just add to it?

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Mac Pro :: Testing Hard Drive Read / Write Speeds

Oct 13, 2010

What is the standard tool to test your hard drives read/write speeds? I'd like to test my new SSD to see how fast it really is. I've heard you cant trust XBench for that which is the only thing I have to use.

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Mac Pro :: Secondary Hard Drive Has Slow Read Times?

Oct 21, 2008

I recemtly purchased a G4 at a local thrift store for $10. After repairing the processor and installing and updating os X 10.4 on a 20g drive I added and additional 100g drive for music and videos. The 20g drive read/write is fine and writing to the 100g works fine also. When attempting to view videos located on the 100g drive, the system hangs. when using itunes it must rebuffer every few seconds.

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Can IMac Read A Windows Formatted USB Hard Drive

Mar 29, 2012

Can an iMac read a plug and play USB hard drive that was previously used for a PC. All of my *.jpg files are backed up on the portable hard drive.

Info:
iMac, Mac OS X (10.7.3)

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Intel Mac :: How To Get Hard Drive To Read / Write Faster

Jun 21, 2012

I just had the hard drive replaced in my IMac and it only at 1 to 1 or maybe 2 to 1 speed. my old one did over 10 to 1. car it be speeded up? Any way to get hard drive to read/ write faster?

Info:
iMac, Mac OS X (10.7.4)

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Software :: Unable To Read External Hard Drives Via Usb / Lights Turn On With Clicking Sound

Jun 17, 2008

this is the second time i have encountered this problem. when i plug in an external hard drive via USB, the lights go on and i can hear the hard drive clicking a whirring but cannot find it anywhere on my mac. both with hard drives formatted on pc's and macs.

running a G4 Powerbook, power PC 1.67ghz

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OS X Mavericks :: External Drive Is Suddenly Read-only / Yet Is Formatted For Mac

Sep 11, 2014

I've had a 1TB external hard drive for the last year and never had a problem with it until now. Suddenly, it is showing as read-only, however, it's formatted for Mac. Do I have to re-format it?

Info:
MacBook Air, OS X Mavericks (10.9.4)

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OS X :: Macintosh HD Partition On Hard Drive Was Damaged, But That Bootcamp Could Still Be Read?

Oct 13, 2009

I'm both elated and pissy at the same time. Something happened to my mac when I was traveling, be it a latent hardware flaw, damage, or some other random act, and my mac OSX partition just, well, died. Unbootable, disk utility spends over a day trying to fix the boot record. The Bootcamp windows partition is fritzy, but it at least mounts and periodically can be booted from. I bought an external usb hard drive, loaded SL onto that, and have my mac back up and running again, but no data to speak of. So based on numerous recommendations, I paid good money to purchase Disk Warrior 4. Nothing, just told me the Macintosh HD partition on the hard drive was damaged, but that bootcamp could still be read.

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MacBook :: Hard Drive Slow Read And Write Speed?

Mar 30, 2012

I have an early 2009 macbook, with 320 GB hard drive and running OS Lion, after i upgraded my os to lion, the computer ran perfectly normal, although a little bit slower than running snow Leopard. However, recently I notice my mac become very slow, got rainbow wheel even when i open the safari. then I use the black magic to test the hard disk speed, it appears the read and write speed is only a little over 30mb/s.

i have recently change my keyboard at apple store, I notice my mac slow down after that, do you think it would related?

Info:
MacBook, Mac OS X (10.7.1)

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OS X :: How To Clon And Copy The Content From One An External Hard Drive To New Hard Drive

Oct 14, 2009

with cloning/copying the content one an external hard drive onto a new external hard drive. Basically, I have a 500GB FW400 drive which I use to store my media files. It's full, so I purchased a 1TB FW800 drive to replace it. Obviously, I thought I could simply copy and paste the media files from the old drive to the new one.I cannot copy the media files to my internal drive first as my internal drive is only 250GB and nearly full itself.I have used Disk Utility to attempt to close the old drive to the new drive, but keep getting "insufficient space" errors.

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