Question about Acomdata (HD250UE5-72) (HD250UE572) 250 GB Hard Drive

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I want to format my external drive. Mostly used on PC, but trying to format using a mac, disk utility won't allow because its read only

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  • Acomdata Master
  • 9,587 Answers

If you're using it mostly on a PC then do not format it on a Mac. Format it on a PC

Posted on Nov 17, 2014

3 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

Geekinator
  • 183 Answers

SOURCE: External Hard Drive not showing on My Computer? [URGENT]

Hello there Mansoor.

First, I have to commend you on how clear and extremely well articulated your problem is presented. You give every detail necessary to grasp your current situation. Good job! I can also clearly see you're at least a fairly proficient user. I only wish I'd reviewed your question before now, so I could have replied sooner. That notwithstanding, here's my GEEK-steer ...

Good job testing the drive against other "known good" systems. Because (as you probably already know) based on that, it's a virtual certainty it's the drive itself that's the source of the problem (UNLESS you used the same USB cable in all tests ... rule that out by using a "known good" cable). Its trouble could be caused by any number things [e.g., deleted partition, virus related, "sector" (file/folder structure related) errors, etc.]. At this point you've utilized all the tools that Windows avails you to work this problem (e.g., you obviously can't perform a Windows "chkdsk" on it unless there's an assigned and known driver letter, "Disk Managment" was no help, etc.). We therefore need additional software tools in order to proceed further.

Per the manufacturer's webpage, "Acomdata does not have any Windows XP, Windows Vista or Mac OS drivers because all products use the built-in driver support already supplied by the associated Operating System". Therefore, they design all their devices to be supported by Windows' database of generic drivers. However, here's their offered driver package for "All Platforms". It's a long-shot, but it couldn't hurt to start by giving this driver a try (you can always "Roll back driver" from within "Device Manager" if necessary).

== CAPTURE AN IMAGE BACKUP ==

If, as you state, data recovery is of the utmost importance, then I would strongly advise your very first objective to be (if at all possible) creating an image of the problem drive, then backup that image onto another drive. I would do that FIRST to lock in it's current state as an insurance policy, BEFORE I ran any testing/diagnostics, or attempted any alternate means of data recovery. Keep that image intact throughout this process until resolution. There are several disk image "Backup Tools" (e.g., "DriveImageXML", "Acronis True Image", etc.) in "Hiren's Boot CD" you can use to accomplish this.

== BREAK OUT THE TOOLBOX ==

b9a4ce2.jpg
Refer here for complete list of its available tools. There are far too many to cover in any detail here. Particularly when the nature of your problem is yet known, as each may, or may not be THE one for the job. However, you can simply Google each to obtain background and usage instructions. Also, tools reside in either the DOS or mini-Windows boot portions of the CD, as some are DOS executable and some Windows. You may have to venture into both until you find the tool that works for you. I know there's a lot in that puppy, but that is intentional because it's a good thing ... affords wide range of choices/options.

== HOW-TO CREATE 'HIREN'S BOOT CD' ==

  1. Download "Hiren's Boot CD".
  2. Extract/unpack/unzip/decompress (<-choose your term, they all mean the same thing) the .ISO disk image file ("Hiren's.BootCD.#.ISO") located within the downloaded "Hirens.BootCD.#.zip" archive file (where # = version of Hiren's).
  3. Burn the disk image to a CD using whichever capable disk image burning software (e.g., Nero, Roxio, etc.) you may have. Don't have one? Then download and install the very capable, yet lightweight FREEWARE "imgBurn"
Burn the extracted .ISO image file ("Hiren's.BootCD.#.ISO") to CD using imgBurn:

288fe1e.jpg
  1. Insert a blank disk (R/RW) into your disk burning capable CD/DVD drive.
  2. Launch "imgBurn", then select "Write image file to disc".
  3. Browse for and select the "Source" .ISO file above.
  4. Ensure the applicable disk burner drive is selected as "Destination" (you may have more than one).
  5. Click the burn icon.
  6. When burning completes, close "imgBurn".
== RECOVER THE DATA ==

Next I would attempt recovering the data using any number of Hiren's "Recovery Tools" category of tools (e.g., "ProSoft Media Tools", "GetDataBack for NTFS", "TestDisk", "Ontrack Easy Recovery", etc.). Many of these include diagnostics/repair facilities you can use in the course of your recovery efforts.

== RECOVER/FIX THE DRIVE ==

Then once/if you've successfully recovered the drive's data, you can (if applicable) use any number of Hiren's (hard-drive related) "Testing Tools" and "Hard Disk Tools" categories of items in order to fully test/diagnose and hopefully recover the drive to working order.

TIPS:.
  • Be aware that you MAY discover you'll HAVE to perform testing/diagnostics/maintentance related actions on the drive first, just in order to get it into recognizable shape for any of the drive image and/or data recovery related tools to perform. That's OK, 'cause "you gotta do, what you gotta do".
  • "Partition Find and Mount" might be particularly helpful in recognizing, then mounting the drive
I apologize in advance for any logic-sequence or grammatical errors this reply may contain. I culled together a few differing draft stage portions of some "Tips & Tricks" I'm intending to post in the near future.

Good luck, and please do post back to ...
  • to let me (and interested others) know how things worked out,
  • to provide clarification or feedback,
  • if you have ANY further questions.
"Today's the best day of my life ... and NOW you're part of it!"
Via-con-Dios and Godspeed -- Geekinator (aka Craig).

Posted on Oct 09, 2009

domotek
  • 591 Answers

SOURCE: Hi, I cannot find my

The scary part is that you TRIED AN OTHER POWER SUPPLY was it the same VOLTAGE??? aws it the same AMPERAGE/WATTS??? was it the same POLARITY??? You could have dammaged the device if you did not respect the power ratings... IT'S NOT JUST A MATER OF PLUGING IN WHATEVER FITTS... You can buy a UNIVERSAL POWER SYPPLY but it has to meet the same VOLTAGE, AMPERS (WATTS), the same POLARITY (tip POSITIVE or tip NEGATIVE) etc... hopfully if the device is not dammaged, bring the storage device to a good electronic store and ask for a equivallant replacement meeting the EXACT power ratings on the device... if it works JUST PRAY GOD THAT YOU'LL NEVER DO THAT AGAIN, if it don't than you've busted the unit, DONT PANNIC you can still recover what ever is on the drive by taking it out of the enclosure and connecting it to a desk top PC via a SATA port and recover the DATA, as for the rest (USB CONTROLLER) than throw it away in the garbage...

GOOD LUCK!!!!

Posted on Aug 30, 2011

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1 Answer

How to remove write protection from sony hd-e1


PC & MAC use different file systems.
It sounds like your hard disk is formatted as NTFS. NTFS will allow a MAC to read from the disk, but not write to it. You need to re-format it using FAT32 (if your MAC is older) or exFAT(if your MAC is fairly new)..
FAT32 will allow a maximum partition size of 2TB(when formatted from a MAC) and a maximum single file size of 4GB.
exFAT will allow pretty much any file size.
NB:Formatting a hard drive DELETES ALL FILES on the hard drive, so backup whatever is important before you re-format it.
1. Open Applications > Utilities
2. Choose you hard drive from the list on the left
3. Choose the "Erase" tab and choose your desired format (FAT32/exFAT)
4. Type in a new name..Click "Erase"

Apr 10, 2014 | Sony HD-E1 1 TB 2.5" External Hard Drive -...

Tip

Formatting an external hard drive with Mac OS X's Disk Utility


Formatting your new external hard drive is not as difficult as you may think. In fact, you don't even have to be a computer techie or uber-Mac geek to perform this procedure successfully.

The tool you would use, to format your drive within your Mac OS X system, is the built-in utility application called Disk Utility.

Disk Utility is Apple Inc.'s defacto utility application, for performing disk related tasks within the Mac OS X volume.

47fc804.png

From creating new images, to burning CDs and DVDs to formatting hard drives, Disk Utility performs well enough to keep not only your Mac OS X volume on your hard drive error free, but keep your hard drive healthy and error-free as well.

I could go on in detail, admirably describing more features of this versatile Mac OS X tool, but the purpose of this FixYa tip, is to show you how to easily format your external hard drive. So that is where I will take you now.
-----------------------------------------------------------------------------------------------
There are generally two formats in Disk Utility that you can use to effectively format your hard drive.

Mac OS Extended (Journaled) - if you want a Mac readable hard drive only

MS-DOS (FAT 32) - If you want your external hard drive to be read by both Mac and PC.

-----------------------------------------------------------------------------------------------
--STEPS FOR FORMATTING YOUR HARD DRIVE WITH DISK UTILITY--
-----------------------------------------------------------------------------------------------
• First, make sure your external hard drive is connected securely to your Mac and is turned on.

•Next, from your desktop, click anywhere on a blank space on your desktop. Now you should see Finder listed near the Apple menu icon.

• From the Finder menu, click on Go, then Utilities from the
drop-down menu. This will take you to your Utilities* folder.

(*You can also get to the Disk Utility application via Applications > Utilities folder)

• Now, locate and launch the Disk Utility application.

When Disk Utility opens you will see a left side window, which will show
all connected hard drives and optical drives. It is here that you
should see your external hard drive listed in that window.

bdf4c64.png



• When you locate it, simply select it and then select Partition
from the tabs on the right hand side.

a11d5a9.png

• Change the Volume Scheme from Current to 1 Partition

• Make sure to provide a name for your new external hard drive.

• Select Mac OS Extended (Journaled) from the Format
drop down menu, for a bootable Mac only external hard drive.

• Or select MS-DOS from the Format drop down menu, for a bootable Mac & PC external hard drive.

From there, click the Options button, located toward the bottom of
your window.


This will open a partition scheme selection window as seen in this screen shot:

04286c5.png


• Select GUID Partition Table for bootability on a Intel processor based
Mac.

• Or select the Apple Partition Map for bootability on a PowerPC based Mac.

• Click the OK button.

Finally, click the Partition button and allow Disk Utility to format your new external hard drive.

When this process is complete, you now have a newly formatted, ready to use hard drive.

Believe it or not, this process can be completed faster than you think.
Using this method with Disk Utility, I was able to format my new 1TB Iomega USB external in less than 20 minutes.
-----------------------------------------------------------------------------------------------
Final Note:
I used the external hard drive as the focus for showing you how to format and prepare your hard drive for use on your Mac, but this feature can also work with internal hard drives as well.
-----------------------------------------------------------------------------------------------
For more information about some of the disk repairing features of Disk Utility, here is a great support link for this nifty and quite effective Apple utility for the Mac OS X platforms:

Using Disk Utility to repair a disk

-----------------------------------------------------------------------------------------------

Thanks for reviewing my Mac OS X Tip!

Regards,

-Mactechtrainer


on Feb 11, 2010 | Computers & Internet

1 Answer

Windows is unable to read the usb


When you formatted the drive for the Mac, you probably used the HFS format. Windows can only read NTFS or FAT formatted drives. You will need to reformat your external drive again. If you use a FAT32 format, all computers will be able to read the drive (Windows, UNIX and Mac - anyway). Note: the FAT32 option does limit the number of files in each directory and the maximum file size.

First back up any files that you have put on the external drive to another disc (your computer's hard disc, for example).
If you are using the M2 external disc for Time Machine backups, you should partition the drive into two sections. Format one to the FAT32 and the other to HFS.

The Disc Utility in OSX can repartition the drive and reformat it. However, sometimes it doesn't correctly format the new partitions. You may need to do some extra step, see http://www.cs.ubc.ca/~pcarbo/macnexstar.html for one set of reformatting steps. In Windows, there is a similar utitily in the Disk Management Control Panel. (Start > Control Panel > System and Security > Administrative Tools > Create and format hard disk partitions (Windows 7)) You can only format the disc to FAT or NTFS with the Windows utility.

Some third-party software is available for changing the partitions on a hard drive formatted for Windows use without losing the data on the disc. I do not know if similar programs exist for OSX.

Some versions of Unix have gparted which will also repartion and reformat a hard disc but can't keep the original data on the drive. (I've used the Windows and Unix partition managers, including Paragon Partition Manager which let me keep my original Windows data on the drive.)

I hope this helps.

Cindy Wells

Apr 12, 2012 | Samsung M2 PORTABLE 320GB USB20 HARD DRIVE...

1 Answer

Format external hard disk on mac i have an asus leather case 2.5 external hard drive, and it's read only. my partner asked me to wipe it and put my music on it, but i clearly can't. how would i go...


If you are on a Mac, this is the easy way to erase it all and be able to put what you want on it after:When your External Hard Drive is connected,
Go to your Applicaiton folder and then Utilities.
Open "Disk utility".
on the right side, you should see your external drive. Click on it.
on the top right of the window, you open the "Erase" tab.
Set the format to Fat32 (to be able to tuse it on a Mac and on a PC)
If you want to change the name of the Disk, just change it or dont touch it.
WARNING: The next step will erase EVERYTHING on the disk. i understand that's what you want to do. Be sure you had selected the RIGHT Disk on the left side.
Click "Erase"
Wait a lil bit...
and. that's it. your Disk is formated and ready to use as new!

Oct 25, 2011 | Microsoft Windows XP Professional

1 Answer

How do you unlock the hard drive. I used it on my pc and now it won't let me add anything to it on a mac.


The windows PCs and MACs have different file system. That's why your MAC cannot recognize your hard drive.
In this case, you need to reformat it. there are a couple of possible solutions:
1. you can reformat the drive into FAT32 which should be readable for both windows and mac.
1a. as soon as you reformat it into fat32, you can use the Disk Utility on the mac to make 2 partitions and format one in NTFS (windows) and the other one in HFS+ (MAC).
2. you can buy a sofware called MacDrive and use that.
OR
3. you can use MacFuse, which is a recently developed free software that lets your MAC read windows drives.

good luck.

Sep 23, 2011 | Toshiba 120GB USB 2.0 Portable External...

1 Answer

Hi,my hd FUJITSU MHV2120AH Media its not working properly anymore.I connect via usb to a mac or pc and doesn't allowed anymore to initialize the disc,so its not possible to erase all data. It tells me...


If you can read teh data with a utility, you should back up (copy) anything on it which you want to save. Then try to use the utility to format the drive. If you mean the windows drive manager, then you may need a data recovery SW to save any data.
If you can not format the drive, consider it junk and toss it. If concerned about data privacy, just smack it with a hammer till it comes apart.

Sep 17, 2011 | Fujitsu (MHV2120AH) 120 GB Hard Drive

1 Answer

My 2TB g3 station doesnt wanna work on my mac os x 10.4.11, it says it cannot be modified.


You problem is most likely because the hard disk is formatted using NTFS which can be read on MAC OS but does not allow writing data on it. Solution is to backup your data somewhere and give it a clean format.
Click on the spotlight icon (the magnifying glass) in the upper right corner of your screen, and typing "disk utility."

Once in disk utility, select your external drive in the list on the left of the Disk Utility window, and click "erase". Select FAT32 as your file format, name the volume, and click the "erase" option.

REMEMBER TO BACKUP YOUR DATA as everything will be wiped out during a format!

Mar 03, 2011 | Samsung G3 Station Desktop External Drive...

1 Answer

I have macintosh so when i put the external hard drive it works with no problems but when i want to get sth as a backup from windows ,,the pc cant see the hard drive,except if i formated the hard drive,how...


Your Mac can read Windows hard drives, but it can't write to them. There is a free software to allow the Mac to read Windows formatted drives, but it's a bit technical. You have to install Mac-FUSE (search Google) and NTFS-3g (go to www.macupdate.com and search for NTFS-3g).

There is commercial software that will allow Windows to see Mac OS Extended (HFS+) formatted hard drives, including MacDrive. I believe it's about $50. If you are using Windows on your Mac via Apple's BootCamp feature and you have Mac OS X 10.6 "Snow Leopard", make sure you install the drivers from the Snow Leopard disc that will allow Windows to read Mac formatted disks.

You can also format your external drive as FAT 32 from your Mac (use Disk Utility in /Applications/Utilities). But FAT is ancient. That's MS-DOS's filesystem. It's not great. But if you want to do it, use your Mac (yes, your Mac because it can format larger drives as FAT than Windows can):

**WARNING***WARNING*** this will ERASE all data on the hard drive. Back up first!***WARNING
1. Click the magnifying glass in the upper right corner of your Mac's screen.
2. Type: Disk Utility
3. Click the Disk Utility Application that comes up (or press Return if you're using Mac OS X 10.5 or 10.6).
4. Click the icon of your external hard drive.
5. Click the Erase tab.
6. Change the format to FAT 32 and Give the drive a one word name, no more than 8 letters.
7 Click the Erase button. ***WARNING*** This will erase your drive!
8. Now the drive can be read by Windows or Mac OS X.

Whew! Lots of info. I hope this helped. Please let us know if it helped. Let us know if it didn't, too. We'll do our best to help. If this helped you, please rate me.

Good luck!

Bot

May 28, 2010 | Apple Computers & Internet

1 Answer

One Touch 4 Maxstor 750 external hard drive installing on a macbook pro


If you have a hard-drive that is formatted as NTFS which stands for (New Technology File Ssytem), Mac OS X can only read the partition. It cannot write to it.

The trick is to use your drive manfacturer's disk-formatting software which will allow you to format your drive as one large partition. Formatting your drive as one large FAT 32 partition is the easiest way to make a drive so it can be used with both PC's and Mac's.

Another option is to use a third part utility so that you can read a MAC formated harddrive's from your PC. Here is one option: http://www.macdrive.com/.

Good luck.

SeekPCRepair

Feb 08, 2008 | Computers & Internet

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