Question about Sony External SCSI-2 9.1 Gb Mo Drive (RMOS561N) Drive

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My external drive is no longer consistently recognizing 8.6 gb 2048 byte sector disks. it works sometimes after inserting and ejecting the disks multiple times. when the green light stops blinking i know it has accepted them. it still works well with 5.2 gb disks. whats wrong and how can i fix it?

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Make sure you are buying the discs labeled DL

The DL stands for dual layer.

If you do not buy the DL you can not have the 8.6 gig write space.

I usually just buy R- DL(not the R+) since R- works on all the PC drives and all the old mac drives.

Posted on Jun 28, 2009

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Hi, I have WD 1TB Elements SE. When I checked the usage space on the partition after I plug in the drive, it shows a total capacity as 1,000,200,990,720 bytes (931 GB) and it shows 921,753,505,792 bytes...


If you have a 32bit system, it is expected to have miscalculations, a 32 bits can only go up to 4Gb for calculations (that is, 2^32 = 4'294'967'296 bytes) a 64bit system can make calculations to 2^64 bytes this is also why you couldn't copy a file larger than 4Gb in a 32bit operating system...
So, if you are running a 32bit OS, you should expect a discrepancy for the total space of the Hard Drive and the amount it shows (that's the 93Gb you are missing as total capacity).
Another reason why it can show you incorrect calculations are damaged sectors on the hard drive it-self. These will present themselves either as occupied memory or missing memory.
So, you should expect some miss calculations and you can expect some damaged sectors on the hard disk (a external drive spins on and off too often, eventually damaging sectors... its a problem of physical drives).
In the end, your disk might be fragmented, so run a disk analysis and a defragmentation on the disk so it can recalculate.
A note: A disk is like a shelve, you put things where there is space, if you remove things, that space will be open, and if you want to put something there it has to be the exact size or small enough to fit there. This effect, when things are small enough leaves blank spaces unusable, consuming space on the hard drive and making the access of files slower, this is fragmentation. In order to expand your disk life expectancy you should run defragmentations...
To run a defragmentation, go to START, write "Disk Defragmenter", choose your disk and run and analysis and defragmentation.

Jun 24, 2011 | Western Digital Wd Elements Se 1tb...

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Hi. i have a toshiba external hard drive and any time i insert, my machine dosnt see it. i tried chkdsk on it and it dislayed that some sectors are unreadable. i even tried to access it from the comand...


make sure the lead/s that attach to this drive have a secure seating and are not bad/faulty the light on only tells that its getting power it might not be getting enough power you might test the lead/s or
just replace the cable of the hard disk, when you plugged the external disk drive you got that windows could recognize the USB device change the cable everything should work fine again, sometimes the wires inside the cable will be damaged due to bending or stretching or placing heavy equipment upon the cable,
hope this helps

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4 GB pen drive show property as 0 byte used and 0 byte free..when subjected to open show insert disk


4 GB pen drive show property as 0 byte used and 0 byte free..when subjected to open show insert disk please help!

Aug 23, 2010 | Kingston (DTIU3/2GB) 2 GB USB Hard Drive

1 Answer

Cannot format octagon veridisk T118 usb


Try this
Microsoft Windows 95, 98, ME syntax
Formats a disk for use with MS-DOS.
FORMAT drive: [/V[:label]] [/Q] [/F:size] [/B | /S] [/C]
FORMAT drive: [/V[:label]] [/Q] [/T:tracks /N:sectors] [/B | /S] [/C]
FORMAT drive: [/V[:label]] [/Q] [/1] [/4] [/B | /S] [/C]
FORMAT drive: [/Q] [/1] [/4] [/8] [/B | /S] [/C]
/V[:label] Specifies the volume label. /Q Performs a quick format. /F:size Specifies the size of the floppy disk to format (such as 160, 180, 320, 360, 720, 1.2, 1.44, 2.88). /B Allocates space on the formatted disk for system files. /S Copies system files to the formatted disk. /T:tracks Specifies the number of tracks per disk side. /N:sectors Specifies the number of sectors per track. /1 Formats a single side of a floppy disk. /4 Formats a 5.25-inch 360K floppy disk in a high-density drive. /8 Formats eight sectors per track. /C Tests clusters that are currently marked "bad." Microsoft Windows 2000 and Windows XP syntax
Formats a disk for use with Windows 2000.
FORMAT volume [/FS:file-system] [/V:label] [/Q] [/A:size] [/C] [/X]
FORMAT volume [/V:label] [/Q] [/F:size]
FORMAT volume [/V:label] [/Q] [/T:tracks /N:sectors]
FORMAT volume [/V:label] [/Q] [/1] [/4]
FORMAT volume [/Q] [/1] [/4] [/8]
volume Specifies the drive letter (followed by a colon), mount point, or volume name. /FS:filesystem Specifies the type of the file system (FAT, FAT32, or NTFS). /V:label Specifies the volume label. /Q Performs a quick format. /C Files created on the new volume will be compressed by default. /X Forces the volume to dismount first if necessary. All opened handles to the volume would no longer be valid. /A:size Overrides the default allocation unit size. Default settings are strongly recommended for general use.
NTFS supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K.
FAT supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K, (128K, 256K for sector size > 512 bytes).
FAT32 supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K, (128K, 256K for sector size > 512 bytes). Note that the FAT and FAT32 files systems impose the below restrictions on the number of clusters on a volume:
FAT: Number of clusters <= 65526 FAT32: 65526 < Number of clusters < 268435446
Format will immediately stop processing if it decides that the above requirements cannot be met using the specified cluster size.
NTFS compression is not supported for allocation unit sizes above 4096.
/F:size Specifies the size of the floppy disk to format (160,
180, 320, 360, 640, 720, 1.2, 1.23, 1.44, 2.88, or 20.8). /T:tracks Specifies the number of tracks per disk side. /N:sectors Specifies the number of sectors per track. /1 Formats a single side of a floppy disk. /4 Formats a 5.25-inch 360K floppy disk in a high-density drive. /8 Formats eight sectors per track. Microsoft Windows 2000 and Windows XP recovery console syntax
Formats a disk for use with Windows 2000.
format [drive:] [/q] [/fs:file-system]
drive: Specifies the drive to format. /q Performs a quick format. /fs:file-system Specifies the file system to use (FAT, FAT32, or NTFS) Examples
When using the format command, remember all information on the drive you wish to format will be completely erased.
format a:
Would erase all the contents off a disk. Commonly used on a diskette that has not been formatted or on a diskette you wish to erase.
format a: /q
Quickly erases all the contents of a floppy diskette. Commonly used to quickly erase all information on the diskette.
format c:
This would erase all the contents of your C: hard disk drive. In other words, unless you wish to erase all your computer's information, this command should not be done unless you're planning to start over.

Or
Right click My Computer-->Manage-->then go to Disk Management
and select the to format right-click it and click format. Thats it Your drive will format and You can also choose in which file system you want to format your drive.
For further help or to thank me mail me on my email ejaz89@live.com

Aug 06, 2010 | Computers & Internet

2 Answers

Unistalled ext hd unsafely, now not being recognized.


It could be that the "table of contents" on the external disk-drive has been scrambled. Whatever you _do_ try, do _NOT_ try to run 'CHKDSK' (or "check disk") against the drive.

Instead, look online for "File Scavenger" software, which can read through the drive, sector by sector, and try to "stitch" together the pieces, in order to "recover" your files.

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1 Answer

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did your computer device manager recognized your external drive? did disk management recognized you external drive? let me know.

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1 Answer

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1 Answer

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