External Drive Read/Write

My access to my own external drive has become tenuous.
Everything worked fine until I created a new user on my MacBook that was actually a Time Machine backup of my G4 that Migration Assistant brought over (that computer went down). Somewhere along the line, I realized that my main user account on the MacBook (the original user) was being locked out of certain resources on my Lacie 250 GB external drive.
In the Sharing & Permissions arrow of the Get Info on the drive, it says I have custom access. The owner is listed as (unknown) and can read and write; there is also a group called Everyone, but this group has no access. These names are grayed out. When I click on the plus sign or the configure wheel and try to add a user, whatever name I type in merits the message: The name you entered is not valid. Please try again.
What has happened that I can't access my own drive and how can I remedy the situation? Any thoughts would be appreciated. FYI, I'm an intermediate Mac user who can work with Terminal if commands are provided. Thanks!
Grant

In the Get Info window and the Sharing and Permissions section (I don't have an Ownership and Sharing section), first off there's no lock and I'm not prompted to authenticate. When I try to change privileges of the two users that are already there (unknown and everybody), nothing changes. And when I click on the plus sign to add a user, I'm not given a list but only a window into which I must type a name. I've tried every name I can think to put in there, but haven't had any luck getting one of them accepted.
Because this might help, here's how I have things laid out:
The MacBook is named Gieseke. The main, original user is Grant (shortname: granta). The user I added is Geesekey (shortname: geese). I also have two other users that System Preferences lists as sharing only: Grant & Amy Gieseke and Guest. I've tried typing each of these names in as a new user, but none of them have been accepted.
Grant

Similar Messages

I am moving from PC to Mac. My PC has two internal drives and I have a 3Tb external. What is best way to move the data from the internal drives to Mac and the best way to make the external drive read write without losing data

I am moving from PC to Mac. My PC has two internal drives and I have a 3Tb external. What is best way to move the data from the internal drives to Mac and the best way to make the external drive read write without losing data

Paragon even has non-destriuctive conversion utility if you do want to change drive.
Hard to imagine using 3TB that isn't NTFS. Mac uses GPT for default partition type as well as HFS+
www.paragon-software.com
Some general Apple Help www.apple.com/support/
Also,
Mac OS X Help
http://www.apple.com/support/macbasics/
Isolating Issues in Mac OS
http://support.apple.com/kb/TS1388
https://www.apple.com/support/osx/
https://www.apple.com/support/quickassist/
http://www.apple.com/support/mac101/help/
http://www.apple.com/support/mac101/tour/
Get Help with your Product
http://docs.info.apple.com/article.html?artnum=304725
Apple Mac App Store
https://discussions.apple.com/community/mac_app_store/using_mac_apple_store
How to Buy Mac OS X Mountain Lion/Lion
http://www.apple.com/osx/how-to-upgrade/
TimeMachine 101
https://support.apple.com/kb/HT1427
http://www.apple.com/support/timemachine
Mac OS X Community
https://discussions.apple.com/community/mac_os

ThinkPad External DVD Reader / Writer USB 2.0??

Hi, one of the largest online selling and buying website in New Zealand, trademe, has listed via a buyer a ThinkPad External DVD Reader / Writer USB 2.0. One of my friend bought it and found that it is shown on the computer hard drve as a Philips DVD RAM SDVD 8821 HUSB. The buyer claimed that it is a genuine product bought from IBM shop. I am asking if there is a possibility for that to happen? If it is a fake product of IBM, is my friend liable to buying fake stuff. I think she was duped to think it is a genuine product. I asked this question via the IBM Australia. The respondent told me the model number was "Part Number - 43N3264". I had a search on google and the part number of the leveno external drive is not similar to the one I bought from the online shop. Mine one has got the logo of "thinkpad" on the bottom right hand corner. Whereas the external drive with the part number 43N3264 had the logo of leveno on the bottom left hand side. That's why I need to ask you in this inquiry. Intuitively, I don't think "thinkpad" has manufactured external drive. It has only been used as laptop models. Thanks for your attention.

there are several fake ones on the market, some are well made while others are not.
AFAIK the genuine one don't have a thinkpad logo, but rather a Lenovo logo.
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

G710 hard drive read/write speed

Hello,
I have a brand new Ideapad G710 with 1TB Serial ATA 2, 5400rpm with advertised speed of 3 Gb/s (= 384MB/s).
I am running Windows 7 ultimate x64 with SP1.
When I test hard drive read/write speed (I used CrystalDiskMark) I get results of about 100MB/s, which is 3-4 times slower than it should be.
I am not running any resource heavy applications (Resource monitor reports Disk I/O to be 0 most of the time in idle state). I have 3 partitions, each with 16-32GB paging file size and all are >90% empty. All partitions have been defragmented before testing.
Is this normal? Are there any lenovo drivers or utilities than I might be missing or that can slow/speed this?
Solved!
Go to Solution.

hi Daew,
Welcome to the Lenovo Forums.
The results that you got while running CrystalDiskMark is normal. The SATA 2 (3Gb/s) that you mentioned is actually the SATA interface support, not the actual read/write performance.
If you have a Seagate HDD (eg. ST10000LM024), check these specs
From the above specs, the unit has a cache that has a read/write max speed of 145 MB/s but there are environmental factors and power requirements to get this speed (eg. read/write speed on AC power is differente from battery power).
AFAIK, if this is the specs that is design for this drive, there's no way to speed it up.
If you're planning to upgrade in the future though, you can get an SSD for faster read/write.
Regards
Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.
Follow @LenovoForums on Twitter!

My ipad3 will not turn on except to display the following[NAND] _FindFlashMediaAndKerpout:429 physical NAND block offset 16 [NAND] start:220 this 0xa015cc00 PROVIDER=0x9ed20080 flashMedia=0x9ed20080 [NAND] WMR_Start:149 Apple PPN NAND Driver, Read/Write

Help. My ipad will not boot up except to show the following message.
[NAND] _FindFlashMediaAndKerpout:429 physical NAND block offset 16
[NAND] start:220 this 0xa015cc00 PROVIDER=0x9ed20080 flashMedia=0x9ed20080
[NAND] WMR_Start:149 Apple PPN NAND Driver, Read/Write
Ideas? Help

Hi, my ipad 2 just got the same problem and after reading all relative post, finnally i figrue it out, that is no software issue at alll just hardware,
I did attemp replace the power button cable on my ipad so i must disconnect the back camera cable so there is my problem. Because the connect some how not exact in place, i took the camera out and the issue is gone. So, in your case, if you did try to replace anything look at them again or you just take them out one by one and reboot ipad until it work.
Hope this help
Binh

Make external hard drive read/write

Not quite sure if there is in the right section but oh well.
Here's the story:
SeaGate FreeAgent GoFlex Drive (1.5TB) (THE FOLLOWING INFO WAS TAKEN FROM ITS APPLICATION: ("SEAGATE DRIVE SETTINGS")
Drive Info
Model: FA GoFlex Desk
Firmware: 0D19
Volume Info
Format: Windows NT Filesystem
Capacity: 1397.26 GB
Available: 1224.35 GB
Used: 172.91 GB
Mount point: /Volumes/FreeAgent GoFlex Drive
So it seems to slow down my iMac (10.6.8), 2GHz Intel Core 2 Duo, 1.5GB 667 MHz DDR2 SDRAM (memory) (1st Generation 17 inch) a fair bit. Could this be because of the Format? I have no idea why it says that. When I first installed it, it asked what OS I'm going to use it for. Not quite sure if I chose both or just Mac. But those files have somehow dissappeared.
Now in Disk Utility...the RAID tab, Format says it is set to Mac OS Extended (Journaled) but then in the Erase tab it says Format: Windows NT Filesystem
Which format is it set to!?!?!?!?!?!?!
Now to the main point:
I also have a new 13" MacBook Pro. When I plug it into it, I only have Read Permissions. How do I make it have Write Permissions as well?
Sorry for the long essay...I hope you can help me. I might have two problems here.
1. Is the format correctly set up for my iMac?
2. How do I set it to have Read/Write permissions on different computers?
Thanks.

The Format is incorrect for Mac use, as you guessed. Go into Disk Utility again, highlight the external har drive in the left hamd column by clicking on it and select the "Erase" tab, up and over to the right. Then select the Format below that will be installed as "Mac OS Extended (Journeled)". THEN, OK the erasure. That should clear things up.
Note: your Windows PC will NO LONGER be able to read the external hard drive. It will be formatted for OS X use.
Hope this helps

FireWire External Drive - Read Only Filesystem

I have a strange issue that I have not been able to resolve. I have an external hard drive connected to my iMac that has a read only file system. I have used it for years without issue. It switched to read only just recently.
Here are the details:
27-inch, Mid 2011 iMac
Processor 2.7 GHz Intel Core i5
Memory 12 GB 1333 MHz DDR3
Graphics AMD Radeon HD 6770M 512 MB
Software OS X 10.8.4 (12E55)
The drive in question:
Mount Point : /Volumes/DATA
Capacity : 2 TB (2,000,054,960,128 Bytes)
Format : Mac OS Extended
Available : 450.83 GB (450,826,641,408 Bytes)
Owners Enabled : No
Used : 1.55 TB (1,549,228,318,720 Bytes)
Number of Folders : 15,989
Number of Files : 84,118
As you can see, everything is set to Read & Write. However when I try to remove a file, I get:
$ rm -f test.file
rm: test.file: Read-only file system
If I try to write a file I get:
$ touch test.file
touch: test.file: Read-only file system
I have run the First Aid utilities and everything checks out OK:
The volume DATA appears to be OK.
Rebooting does not fix the issue either. After searching here and the interwebs, I haven't found a solution. Only references to FAT/NTFS formatted drives.
Is there anything else I can do that I missed?

Thank you Linc & MrJavaDeveloper!
I'm not throwing these suggestions out the window, but they would also be exhiiting some other symptoms too. With indexing issues, it shouldn't impact the inode or anything dealing with the filesystem.
The good thing is that the data is all still good and is readable.
First Aid is still the name of the tab in Disk Utility :-)
Regardless, I got impatient and I didn't have a spare drive to copy the data off of it so that I can rebuild this drive. So I nuked it and recreated the partition. Now I have to wait a couple of weeks for my restore from CrashPlan to finish :-P.

Mac Mini drive read/write 20MB/s

I've been fighting a slow drive for months and have yet to find a solution. Most recently I installed a 1 TB 7200 RPM drive from OWC, cloned my drive and find the new drive measures about the same read/write speed of 20-25 MB/s. I'm at a loss to find a solution. Interestingly when I test the stock 500 GB drive that is now reformatted and empty I see it measures 50 MB/s read/write.
The drive has about 300 GB of 1 TB free and should be relatively fragment free since I copied over the data in one swoop.
I've seen others suggesting a format/reinstall but that sounds to me like the Windows mentality of "hiding" the problem instead of locating and resolving the issue (e.g. reboot and see if it goes away...solved!). Notably, if I take the time to reinstall and reconfigure after formatting how do I know I won't just end up in the same circumstance again.
I appreciate any suggestions to locate what might be causing the slow speed or any troubleshooting tips to narrow the culprit. For example, I ran...
kextstat | grep -v com.apple
...a while back and discovered I had FSEventer still installed from long ago when I tried it out briefly It installs a kext that tracks all filesystem activity so it noticebly affects read/write speed. Removing that moved me from 15 MB/s to the 20s. Now kexstat doesn't list any non-Apple kexts.
I appreciate any other suggestions to discover drivers or really software of any kind beyond default Apple provided OS-level stuff that I can systematically eliminate in search of a solution.
Thanks for any and all help!

Hi, I'm thinking reformat isn't the way to go, leastwise not yet!
You get these speeds copying to/from what?
What size Cache is this new drive?
How is this drive connected, internally or externally?
Might try Etrecheck...
http://www.etresoft.com/etrecheck

Hard drive read/write problems

I have three external hard drives connected to my iMac that are always on with the computer. Just recently, I started having trouble with permissions. Every day I have to go into disk utility and click "verify disk" to be able to write to the drive, if I don't do that then I can only read the drive. It's the same with all three of them! This just started a couple of weeks ago. What is wrong?
Oh! My recollection recalls that a couple of weeks ago upon starting the iMac one morning, one of my hard drive's name, as well as a .iso file that I have on my desktop, were totally wacko. Full of numbers and characters, etc. I'm wondering if my HD problem is caused from this?
I desperately need some help!

if running "verify disk" helps at all it's definitely not a permissions problem. it's a file system problem. when system detects a serious file system problem when mounting an external drive it will mount it as a read only file system. run "repair disk", not "verify disk" using disk utility on all the drives involved. see if that helps. and are there any errors when you run it?

External drives read only problem

iam a new mac user. i have 2 external drives formatted to ntfs that can only read. They are too large to transfer files to the mac to reformat to fat32. Any workaround suggestions?

yopadima wrote:
iam a new mac user. i have 2 external drives formatted to ntfs that can only read. They are too large to transfer files to the mac to reformat to fat32. Any workaround suggestions?
You can install NTFS3G, this will allow you to write to an NTFS drive

Hard drive read/write question

Hi,
I purchased this mac pro(2008) with the stock seagate 320gb hard drive (model ST3320820AS_P) and I am interested to know what kind of read write numbers to expect from this drive.
I am having a tough time trying to find any numbers that aren't in reference to RAID setups, and became concerned that this drive might be working at peak performance due to firmware issues others are talking about.
(tangent - I would like to add more drives, but am on the fence for WD or seagate)
System Info
Xbench Version 1.3
System Version 10.5.2 (9C31)
Physical RAM 2048 MB
Model MacPro3,1
Drive Type ST3320820AS_P
Sequential 92.82
Uncached Write 70.70 43.41 MB/sec [4K blocks]
Uncached Write 110.35 62.43 MB/sec [256K blocks]
Uncached Read 82.04 24.01 MB/sec [4K blocks]
Uncached Read 129.89 65.28 MB/sec [256K blocks]
Random 33.16
Uncached Write 11.33 1.20 MB/sec [4K blocks]
Uncached Write 73.50 23.53 MB/sec [256K blocks]
Uncached Read 88.77 0.63 MB/sec [4K blocks]
Uncached Read 134.04 24.87 MB/sec [256K blocks]

http://www.barefeats.com/hard94.html
http://www.barefeats.com/quad07.html
http://www.barefeats.com/quad08.html
750GB WD SE16 $168 is hard to beat.
I saw some systems came with WD 320GB. Guess Apple is using both for now.

Thunderbolt drive Read/Write speeds have significantly dropped

I got a new Western Digital Thunderbolt VelociRaptor drive. When I did speed tests on it using "BlackmagicDesign" Speed Test software initially (when empty) the drive was giving me read and write speeds of 350 MB/s. Now however I have 90% of the drive occupied with data and the read/write speeds have dropped significantly to 230 MB/s. Any ideas as to why and how I could improve this?
Thanks

ishjen wrote:
Anybody know how fast the read/write speeds are with a USB hard drive and the Airport Extreme Base Station?
Welcome to Apple's discussion groups.
Apple's AirPort base stations aren't known for fast file serving, but for most purposed they're fast enough.
I can't comment specifically on your Aperture plan, but with some software it's important to avoid simultaneous access by more than one user.

Hard drive read write speeds are too slow

I was having an issue with 17inch macbook pro. was getting 4.0mb/s read write speed tops. and smart status failure.
So i replaced the drive. The new drive is a 7200 RPM 500GB WD drive. I'm getting 12.0mb/s on top speed. Computer feels a little quicker but still slow overall.
I ran this test on a fresh install of snow leopard.
Is it just me or do those read/write speeds on the new drive still seem slow?
2007 17inch macbook pro with 2gigs of ram.

That does seem slow - on the other hand, what are you using to measure it?
My 1Tb 2.5" SATA drive performance shows as follows: http://grab.by/7zau
Xbench Stats: http://grab.by/7zau
Anything in System Profiler? http://grab.by/7zaR
Link Speed at 3 Gb?

External Drive Reading Problem

So,
I'm transferring files to my Mac using a FreeAgent Drive by SeaGate. I click on the external drive button and I see the files, but when I click on them, they disappear. I view the files on my other machine, they open up with no problem. What gives? I'm assuming that this is a setting problem since they are viewable on the other comp. What gives? Any Settings I need to tweak?
-gotmud

If your Mac were older, it would probably work fine. Before 10.4, the Mac would have treated it as a "foreign" file system and mounted it and read it just fine.
In 10.4, the advent of the Intel Macs meant that you could now boot from Windows-formatted drives, and Windows formats were now "native".
I know the history, but I do not know the implications of Windows formatting. It should be FAT-32, but I don't understand what the Mac is trying to do with it that would make the Icons jump around or disappear.
There is a hint that there may be trouble in this document. It suggests that when you want to copy a bunch of Windows documents, you put them in one Folder on your Windows machine, then copy that one Folder, then open it when it gets to your Mac. I think the key is that the files are hidden in folders, so that exactly which Icon they should have, and where they should be in the window cannot cause confusion.
http://docs.info.apple.com/article.html?path=Mac/10.4/en/mh1529.html
Message was edited by: Grant Bennet-Alder

External Drive Reads Burned DVDs

I replaced the original drive with a Pioneer that lasted about 1 year, sent it in for repair and got a sony. It does the same thing as the pioneer, burns but won't read dvds. Tried serveral brands of dvds, no change. It reads commercial dvds and cds cdrs ok. So I took the pioneer when it came back from service and hooked it up to a usb case and it will read the burned dvds.?! I guess you need an external dvd reader......
Steve

Several of us create a disk image, burn a DVD, and move the disk image (.img) to an external HD for future use.
Don't count on any recordable DVD to be good "down the road." Well, maybe Verbatim's Archival Grade DVD.
BTW, If I'm doing movies, I export the edited version back to MiniDV tape. That's the best backup.

External Drive Read/Write

Similar Messages

Maybe you are looking for