Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Formatting a flash drive that has EFI using Windiows 7

28 Jun 2010   #1
EpicThorn

Windows 7 Ultimate 64 Bit
 
 
Formatting a flash drive that has EFI using Windiows 7

Ok, I've done a few searches, nothing of use could be found.
I have a flash drive that was previously formatted with an EFI partition.
I now want to use the rive for readyboost.
How the heck do I format the drive for use with windows from windows?
I have no Mac machine at hand.

Cheers in advance,
Thorn


My System SpecsSystem Spec
.

28 Jun 2010   #2
fishnbanjo

Vista 64 Ultimate, Windows 7 64 Ultimate, Ubuntu 9.10
 
 

You'll have to treat this like any hard drive you would need to perform this on.
Select Start>type DISKPART to enter the diskpart utility at the prompt, enter list disk as below
DISKPART> list disk
take a look at the disk you want to reformat, and select it with the appropriate number, for example:
DISKPART> select disk 1
once selected, you can delete the GPT / EPI by the clean command:
DISKPART> clean
once done, you can then proceed to format the disk the traditional way through disk management and selecting FAT32 or NTFS.
My System SpecsSystem Spec
28 Jun 2010   #3
baarod

Windows 7 Ultimate 64-bit
 
 

Quote   Quote: Originally Posted by Thorn8369 View Post
Ok, I've done a few searches, nothing of use could be found.
I have a flash drive that was previously formatted with an EFI partition.
I now want to use the rive for readyboost.
How the heck do I format the drive for use with windows from windows?
I have no Mac machine at hand.

Cheers in advance,
Thorn
Insert the flash drive in question. Start, type "cmd", right click "cmd.exe" under programs, select Run as administrator, accept any UAC prompt. In the cmd window type diskpart and press enter. Type "lis dis" and press enter. Identify the flash drive containing the EFI partition by size and note it's disk number n. Type "sel dis n" where n is that disk number and press enter. For example: "sel dis 2". Type "cle" and press enter. This erases all partition information from the flash drive. To create a new primary partition encompassing the entire flash drive type "cre par pri" and press enter. To format the partition type "for quick" and press enter. This will quick format the flash drive with the default file system type and allocation unit size. Type "ass" and press enter. This will assign a drive letter and should display an AutoPlay dialog. You may then close the cmd window.
My System SpecsSystem Spec
.


28 Jun 2010   #4
EpicThorn

Windows 7 Ultimate 64 Bit
 
 

Excellent, thankyou very much gentlemen. I have it written down in my "Tech Little Black Book", but it seems some ***** thought it was more useful to them than me because they pinched it.

+Rep to both of you
My System SpecsSystem Spec
Reply

 Formatting a flash drive that has EFI using Windiows 7




Thread Tools





Similar help and support threads
Thread Forum
USB drive formatting back to FAT32 after formatting to NTFS
Last night, I tried to transfer a video file as I've done dozens of times. It didn't work. I tried a second time and realized it was because the file was more than 4GB which FAT32 USB drives will not accept. I successfully formatted the new USB drive to NTFS. My question is can I convert it...
Hardware & Devices
Formatting a flash (thumb) drive: what's safest?
Apologies if this is not in the best forum. I just bought a bunch of 2GB flash drives (talking data only; no memory) that I will be copying data on to, and then sending those drives to people. Thing is, there is no way to tell what OS they will be using, be it a Windows OS, or a Mac OS. What is...
General Discussion
problem with formatting disc for use as a flash drive
I suddenly stopped being able to format a disc(cd-rw) with the option of "use as a flash drive" or "music cd) when I go to tools for the drive, it will attempt to format but at the end it says format could not be completed. is there a fix??
Hardware & Devices
USB flash drive formatting permanent error?
I was doing some programming for school and then the IDE stopped working and so did Windows, itself, but I had to get somewhere, so i forced myself to pull my 1 GB usb drive out without safely removing it. Still it was acting weird, so I just shut it down. Now i put the usb back in, and...
Hardware & Devices
Flash drive Formatting need help!!!!
I have this flash drive I had it for a couple of years and it was working fine until recently. The problem is when I copy files anything on this flash drive it gets write protected. I tried formatting it it works everything on flash drive gets deleted. After formatting I copy files on the...
Hardware & Devices
Formatting 16Gb Flash Drive
What exactly is ReadyBoost, and do I need it? Also, I want to format the flash drive from FAT32 to NTFS. Apparently, the default allocation unit for NTFS is 4096 bytes. Do I accept this, or should I change it (see attached png)? And if I reformat from FAT32 to NTFS, will I be deleting the...
General Discussion

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 10:21.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App