Help! CD drive reads Dvd's cd-rw's burns cd-rw's can't read/ write cdr's

Hi all,, I have a strange problem. My ibook can read dvd's, read and burn cd-rw's, read audio cd's and store bought cd-roms, but it cannot read or write blank or burned cdr's. I've reset the pram, and reinstalled the OS but nothing. Once I put a disc in it cycles on as normal then ejects the cd after about 30 seconds.. Any idea's what else I could do?
Thanks!

i would say this was a software problem, rather than some kind of incompatibility thing. As a test, you could create a new user account, when you put a CD-R in on this new account it would give you the option of opening the CD in the finder or in itunes, if you choose itunes it should work fine, however if you open it in the finder it will eject the same way.
When i had this problem i archive-reinstalled OS-X, that replaces your system folders and the like, but keeps all your documents and settings, so if you can be bothered that would fix your problem. I'm wondering, however, if it could be fixed by deleting some system files, possible something in root/library/preferences although i wouldn't know what to look for in their.
hope i've been some help. Matt.

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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

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
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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

DVD/CD drive read/writes DVD, reads CD, but suddenly fails to recognize CDr

I'm having a problem that I just don't understand, and I can't seem to find any information on, so I'm hoping somebody out there has some thoughts.
I have a powerbook 17 with the DVD/CD listed below (from system profiler).
This drive has always worked perfectly, but now I find that I can:
- play DVDs
- burn DVDs
- play/read CD
but when I insert a CDr to burn, the icon never shows up on the desktop. Running disk utility lists it as a CD (read only) -- I'm not sure if disk utility is valid in this context or not, but I had to start it so that I could get at the CD to eject it.
At first I thought it might be the media I was using, but I tried two different kinds -- both failed, then I found some blanks of the brand and type that I've been using forever...failure.
So, can this be a hardware error? If so, how can a hardware drive error only affect recognizing writeable CDs? If this is the case, I'd like to learn something! =:-)
The only thing that's changed on this system is that I regularly run software updtate...everything's up to date. This is OSX 10.3.9.
Thanks,
keith
MATSHITA DVD-R UJ-816:
Manufacturer: MATSHITA
Model: MATSHITA DVD-R UJ-816
Revision: DXJ3
Serial Number:
Drive Type: CD-RW/DVD-RW
Disc Burning: Apple Supported/Shipped
Removable Media: Yes
Detachable Drive: No
Protocol: ATAPI
Unit Number: 0
Socket Type: Internal

Keith, just for grins, go to your Apple and click it and then choose System Preferences, and when it opens choose CD-DVD and see what option you have checked for the different media.
Just a chance when you did an update it might have changed a default setting you had.
Don

Urgent!!! Need help in file read/write data to a serial port

Hi,
I really need someone's help in order for me to complete my project. I have attached a vi which I have taken from an example and integrate to my project. In the vi, I have managed to get the encoder counts using Ni 9411. I need to read/write that data from ni9411 to ni9870 without using any serial port as they are connected to a NI 9104 chasis. May I know whether I am correct in writing the data to my ni9870 port using the vi I have attached? Does anyone know how i can convert the number of counts to a 8-bit data/byte so that I can send the data through the RS232 port? I really need someone's help as I need to finished in 2 weeks time.
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Attachments:
Encoder Position & Velocity (FPGA).vi ‏23 KB
SINGLEMOTORMODIFIED.vi ‏17 KB

Afai,
As I allready suggested you here, call your local NI Office and ask for assistance!
You really need assistence in a higher level that we can provide via the forums. Otherwise I don't see a chance for you to finish your project in time.
1. Convert I32 to U8 to write it to the 9870 could be done like this:
2. The vi to control the epos2.
There is NO way ( absolutely NO way) to port this vi to FPGA. It's based on VISA calls, uses an event-structure, both are not available at the FPGA.
The only thing you could do is to analyze the VI, the instruction set and design an FPGA vi which handles the specific instructions you would need.
I have no experience with epos2 and I'm not 100% sure if this would work as you would like to use it. And doing this needs deep knowledge of LabVIEW, VISA, Instrument Drivers, the epos hardware, FPGA programming, and so on...
Christian

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")
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Model: FA GoFlex Desk
Firmware: 0D19
Volume Info
Format: Windows NT Filesystem
Capacity: 1397.26 GB
Available: 1224.35 GB
Used: 172.91 GB
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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.
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Which format is it set to!?!?!?!?!?!?!
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Sorry for the long essay...I hope you can help me. I might have two problems here.
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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

Help with utl_file (read/write file from local directory)

Need help reading/writing file on local machine from plsql using 10.2 DB.
I am trying to read/write a file from a local directory(laptop) without success.
I have been able to read/write to the database server directory but can't write to directory on local machine.
The utl_file_dir parm has been set to * and the db restarted but I can't get it to work... Here's the plsql statement.
out_file := UTL_FILE.FOPEN ( 'C:\PLSQL', 'TEST.TXT', 'W' ,32767);
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Running 10.2 on a remote windows server, running PLSQL using sql*navigator.
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I don't see how you expect the server to be able to see your laptop across the network, hack into it and start writing files. Even if it could, what if there is more than one laptop with a C: drive? How would it know which one to write to?
Is there a shared drive on the server you can access via the laptop?

Mac Mini drive read/write 20MB/s

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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 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.
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http://www.barefeats.com/hard94.html
http://www.barefeats.com/quad07.html
http://www.barefeats.com/quad08.html
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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.
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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.
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I ran this test on a fresh install of snow leopard.
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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?

Help! - Datasocket read/write problem

Here are two basic read/write datasocket vis... that do not work properly.
Start the DS engine, run both vis, modify the string array in read.vi or resize the write.vi window and you will see that the indicator display in write.vi is wrong.
Can anybody tell me why?
Thanks a lot for your help.
MichelC
Attachments:
Datasocket.zip ‏19 KB

From what I see, the elements being written and read are not synched to the same iteration number, and thus are not array-indexed the same, therefore, you'll have a difference in the array index # for what was written and what was read. In other words, the DSS-read is not always at the same iteration # (index #) as the DSS-write when the write and read occur.
However, with that thought, you could remove all looping and simply DSS-write the whole array to your DSS-read. Then you keep the indexing equal on both ends. When you send and receive a whole array, no looping is needed, so the process also is quicker.
Well, that's how I see it, good luck with it, Doug

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I can format my drive, but I want to retain the cross platform in doing so. I just can't remember how to do it. I do not know what the drive is formatted to, out of the box. Is that why I cannot write any files from my mac, to that drive? Again, it will mount on my Mac desktop, but wont let me do anything else. If I format, I just want to make sure I can copy files from my PC, if necessary, and still have access to those files on my Mac. And, visa versa... Thanks again, Dave

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Help! CD drive reads Dvd's cd-rw's burns cd-rw's can't read/ write cdr's

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