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There may be a virus attack and i think it must be showing o bytes space as well. well the chances are 50 percent. but lets try....now you have to format the usb there is no other option and windows wont allow you to format.Download the software HP disk format from the link below.
Install and format the usb with hp disk format tool. the link is below:
Format on your old Macintosh using standard Mac HFS, then your new Mac will read the files without problems. Reformat the discs if they came pre-formatted for DOS as the filenames won't copy properly and will be very slow to read/write
If your new Mac is FireWire/USB only, then you'll need to track down a USB Zip drive (the 100Mg or 250meg versions will read your discs ok.)
Find and check real free space go to my computer and right click your driver letter and click properties it will show what is real ammount of disk. For one 4GB file it must not be problem but for meny little file can take more space besider their sum of capacity is 4GB. At format check correct ammount of data "capacity" is 8GB (7.9) also file system for NTFS or FAT32. FAT cant bear 8GB.
You must using solaris format utility to label thies T4-2600 drive. And you must put 512byte/sector MO disk into drive. for example:
1.$ su - root ;Become root user
2. # format ; identified disk
3. choose disk
4. label disk
5. if type unknow please input : type
6. choose T4-2600
8. modify disk partition
9. newfs ; ex: newfs /dev/dsk/c1t0d0s0
10. mount disk
11. using MO disk like HDD
This will walk through the steps to create a bootable USB flash drive for the purpose of installing a Vista or Windows 7 OS. These instructions assume that you have a computer with Windows Vista installed on it. Required: ·USB Flash Drive (4GB+) ·Microsoft OS Disk (Vista / Windows 7) ·A computer running Vista / Windows 7 Step 1: Format the Drive The steps here are to use the command line to format the disk properly using the diskpart utility. [Be warned: this will erase everything on your drive. Be careful.] Plug in your USB Flash Drive Open a command prompt as administrator (Right click on Start > All Programs > Accessories > Command Prompt and select “Run as administrator” Find the drive number of your USB Drive by typing the following into the Command Prompt window: diskpart list disk The number of your USB drive will listed. You’ll need this for the next step. I’ll assume that the USB flash drive is disk 1. Format the drive by typing the next instructions into the same window. Replace the number “1” with the number of your disk below. select disk 1 clean create partition primary select partition 1 active format fs=NTFS assign exit When that is done you’ll have a formatted USB flash drive ready to be made bootable. Step 2: Make the Drive Bootable Next we’ll use the bootsect utility that comes on the Vista or Windows 7 disk to make the flash drive bootable. In the same command window that you were using in Step 1: Insert your Windows Vista / 7 DVD into your drive. Change directory to the DVD’s boot directory where bootsect lives: d: cd d:\boot Use bootsect to set the USB as a bootable NTFS drive prepared for a Vista/7 image. I’m assuming that your USB flash drive has been labeled disk G:\ by the computer: bootsect /nt60 g: You can now close the command prompt window, we’re done here. Step 3: Copy the installation DVD to the USB drive The easiest way is to use Windows explorer to copy all of the files on your DVD on to the formatted flash drive. After you’ve copied all of the files the disk you are ready to go. Step 4: Set your BIOS to boot from USB This is where you’re on your own since every computer is different. Most BIOS’s allow you to hit a key at boot and select a boot option. I used these instructions to get my new Dell Mini 9 laptop loaded with Windows 7 (the PDC bits). HTH.
These are pre-formatted and servoed at the factory. Awhile back I was researching the 'Click of death" fault and found a guy in Belgium or Germany that coded a repair program for bad disks. Googlee for it
sometimes when it formats, it hoses the servo information (which the drive uses to keep track of things) and the disk becomes useless. This is why I stopped using ZIP disks and won't even buy a drive when I see them for 9.99 ;-)
You can only format these drives in mode FAT16 or FAT32. Try to format it in FAT32 mode and let Windows choose the default sectors for you. This is the better solution. As I can see, the operating system recognise your drive that mean the correct driver was loaded. After a new format whith the correct params if your flash drive shows the same thing 0 disk space 0 disk space used, your drive is DEAD. It happens if you had unplug your flash drive whithout stoping it by cliking on the icon in the notification window (near the clock), the icon is mini drive whith a green arrow. Allways unplug the USB devices by this because you have the +5 voltage on this connector and if you don't do this an arcking effect happens betwen your device and the connector.
There are a number of solutions already on Fixya I think.. so also have a look thru the old postings ....
Ya have to get a BIOS password remover one that works for YOUR BIOS, be it an AMI Award, Phoenix, ... make a win98 boot disk.. copy PW remover to disk... boot up on Floppy... run PW remover.. reboot ya all good.. :)
here are some links though...