OS X :: External Drives Read Only On Reboot?
Dec 29, 2009
Every time I reboot my computer my external drives are all set to "read only". I have to eject them, and remount them and things are then fine again, but this is an annoying step and the fact that a reboot is causing them to switch to read-only is having me worried.
Anyone else have this problem/know of a solution?
I've been trying to figure it out over at the official apple forums but we're not getting anywhere... the thread is here:
[URL]
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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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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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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.Â
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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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Jan 12, 2011
I'm using Macdrive on this pc laptop I got, but now I'd like to go in the reverse direction and transfer files directly from an NTFS formatted drive to my Macs.
Whats the best app for doing this?
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Mar 25, 2012
I have an external Hard Drive that is formatted in NTFS, but my Lion won't read it. How can I read and copy the files from that one into my MacBook Air?
Info:
Imac, Mac OS X (10.4.10)
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Nov 8, 2010
I am running Snow Leopard. I have a few drives on my PC that I have shared, three are NTFS and one is FAT32. I can read and write to the FAT32 on just fine, everything works as it should with it. I can view the NTFS shared drives, though when I try to access them I get this error. The operation can't be completed because the original item for "Drive Name" can't be found. I can read NTFS USB drives fine, and with NTFS Mounter running I can write to them all the same. However this is not the case whatsoever with networked NTFS drives. I am sharing them from a Windows 7 x64 PC, my Mac is a 1st gen Intel Core Duo 1.66.
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Apr 21, 2012
I used to be able to swap my Western Digital external hard drive between my PC and my Mac Book (Snow Leopard) and now with Lion I lost it, have to use iTunes on a PC to sync music to my iPhone !Â
Info:
MacBook Pro, Mac OS X (10.7.2)
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Apr 10, 2012
I use Paragon HFS+ for Windows which allows me to read and write to my HFS formatted drives. It works great for any external hard drive I use but when I use a flash drive it doesn't work. I format both my external hard drives and flash drives the same way, I use Disk Utility, I format them using Mac Extended Journaled and GUID partition scheme. When plugging in my flashdrive, my Windows 7 PC will not mount them. Disk Manager shows 3 partitions: EFI, Fat32 and some empty space. If I format my flash drives using the Master Boot Record partition scheme they work great.
So, here's what I have so far: External hard drives work fine when formatted with the GUID Partition scheme. (Mac extended journaled) Hard drives also show 3 partitions in Windows Disk Manager: EFI, HFS and empty spaceFlashdrives show 3 partitions but oddly enough the second partition shows as FAT32. But is completely unusable in Windows 7 Flash drives have to be formatted using the Master Boot Record partition scheme when formatting them as HFS+ volumes in order to work on Windows 7Windows 7 supports GUID partition schemes.
What is causing my Macbook Pro to treat an external hard drive differently then a flash drive when formatting them? Experience and common sense tells me that it shouldn't matter whether it's a flash drive or spindle drive, both should format the same. Granted, I could simply use exFat or FAT32 on my flash drives for cross platform compatibility however I prefer to use HFS+ when possible.
Info:
MacBook Pro, Mac OS X (10.7.3), 2007 MBP, 2.16Ghz, 3 Gigs of RAM
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Jun 3, 2010
I have an annoying problem when I start up my external hdd in OS X. Let's say the location for the disk is: /Volumes/disk A. Sometimes (often) after a reboot or just a restart of the external hdd in OSX the location becomes: /Volumes/disk A 1. The system adds a 1 to the location of the disk!?!? Torrents cannot found the location of existing downloads and it's the same with my usenet client. The only way I've managed to solve the problem is to try to restart osx + external hdd until the location becomes /Volumes/disk A again (or recheck ALL torrents to the new location). I haven't found any logic when it goes back to the original place yet so often it takes a while to get it right.
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Jan 30, 2009
I have a drive connected via USB 2.0 It's newly formatted with 2 partitions. Running 10.5.6 on a macbook.
The drive seems to work fine, the problem is whenever I reboot the two drives don't mount in finder.
When I look in disk utility. I can see the drive listed but the partitions are not.
I have to manually unplug and re insert the drive for it to function correctly.
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Jun 26, 2012
Installed OSX Lion from my MacBook Pro. Installation completed.However, after reboot I cannot access my external HDD (including my USB). Error such as NTFS-3G always occurred.
Info:
MacBook Pro (15-inch Mid 2010), Mac OS X (10.7.4)
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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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Mar 12, 2012
I have installed my hard drive from a previous but terminally I'll iMac that was running Snow Leopard into a Sata to USBÂ enclosure. This is displaying on the desktop of my new iMac running Lion as an external Hard drive,also system preferences sees it as a start up source.My question is , is it safe to restart into Snow leopard without causing a kernel panic and if it does boot will it be fast enough to use as it as a USB drive.
Info:
iMac, Mac OS X (10.7.2)
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Oct 28, 2007
So my entire iTunes library (about 200 GB) is on an external HD.
After I installed Leopard it's showing as Read Only. There is not option for permissions and in Disk Utility all I can do is verify the disk.
Obviously I can't delete or add files or do anything but read them.
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Mar 29, 2009
I got a macbook pro and a My Book 1tb. Want to finally put away my old PC (which is running only on UBUNTU) away but I need to get the files off my PC onto the My Book. Well after setting up the time machine and what not I move the HD & connect it to my PC & attempt to drag files onto it. Says it's read only. Tried changing the sharing options to read and write for everyone on my mac. Still the same. Used disk utility to wipe clean the entire HD. Still read only. Posting this on Ubuntu forums but I'm positive the problem is on the Mac.
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Apr 15, 2009
i have a sony vaio external hard drive, and i formatted it using my PC, and it worked perfectly fine - i can read / write files to the HD.
however, it was shown as a 'read only' HD once i plugged it to my Mac.. i even tried it with my friend's Mac and the same thing showed.
i tried to repeat the formatting and plugging with both my PC and Mac over 10x time and it's only giving me the same result.
does that mean my mac is not compatible with the HD?
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Apr 16, 2010
I recently purchased this external hard drive. I transferred several GB of movies/TV shows/music onto it from a Windows 7 PC. Now that I've hooked it up to my Macbook (10.6.2), it shows up as read only.
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Oct 11, 2007
Although they work fine on other computers, my external hard drive and USB key won't show up on my macbook. I know it gives power to them since my external lights up when it's plugged in, and I see that they're connected in the System Profiler, but they don't appear on the desktop. Also, my ipod shows up in iTunes, but the computer always says it's corrupted, although it works fine. I thought that was an iPod/iTunes thing but since finding out about my hard drives.
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Mar 1, 2009
What backup solutions are available for backing up two drives on to one backup drive without causing any confusion?
My setup consists of:
- Powerbook (80 GB)
- external Firewire drive (160 GB)
- external Firewire drive (500 GB) for backup
I'm running MacOS 10.4.11, so please don't suggest Time Machine.
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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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Dec 8, 2009
Before you peek into this topic to say "OS X can only read NTFS, not write to it", save the effort; I already know that. I have a 1TB WD MyBook Studio. I partitioned this drive into 2 parts, an Mac OS Extended partition and, using Win 7, an NTFS partition. Now my MBP can mount and see its partition just fine, but it refuses to mount the other NTFS partition, seeing it in Disk Utility as MS-DOS (Fat) format with a weird name. How do I get the MBP to mount the NTFS partition?
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Mar 20, 2010
I bought an Iomega Prestige 1TB external harddrive a couple months ago with it running off my Macbook Pro.
I just flew down home for spring break, leaving my Macbook Pro charger at school. However, I do have the harddrive with all my backed up files. The problem is, my PC laptop (Dell, Windows XP) does not recognizes it. When I plug in the harddrive and turn it on, the computer recognizes that there is something plugged in (it gives me the option to safely remove hardware), but there is no sign of the drive anywhere.
Is there anyway my PC can read/recognize it?
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Apr 11, 2010
I've got a simpletech 2tb hard drive which I've used for time machine, but all of a sudden it won't read when I plug it in. I can hear it power on when I plug it in but it won't show up. I've tried plugging in other devices to make sure the ports are still good and tried restarting with and without the hard drive plugged in. I've only had this hard drive a week and haven't done any improper device removals to it. Also, I am running snow leopard with all the updates.
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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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Jun 19, 2010
How do I format an external HDD to read/write on a mac osx running snow leopard, and also let it be able to be readable on windows vista/7?
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Jul 17, 2010
My hard drive was filling up, so I decided to try and move my music over onto my external. I thought I could do it without reading any guides and I ended up in a royal mess. I now have the folder Music/iTunes/(Album Artwork, iTunes Library, etc) copied over onto my external.
I have completely uninstalled iTunes from my computer, and my internal hard drive has the user/music folder clear.
What is the easiest way to have my iTunes reading my music from my external? I would like to keep playlists and playcounts if possible.
I am on a computer with Mac OSX 10.5.8.
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Aug 6, 2010
I have a portable external hard drive formatted for mac and I want to be able to view my movies that are on it through my games console. I believe both consoles only read Fat 32 so what are my options to get the consoles to read the HD?
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Apr 8, 2012
Permissions are greyed out, and Disk Utility says Owners Enabled: No.
Tried: "sudo chown root:admin" from terminal, with this result: "Read-only file system"Â
Info:
iMac, Mac OS X (10.6.8)
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