Formatting an SD card/Windows: Difference between revisions
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m trying to inform the user that the instructions are not done |
make users choose SD card size first, before telling them what tools are needed - some people seem to get confused and only download guiformat for 64gb cards |
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== What You Need == | == Choose your SD card size == | ||
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=== What You Need === | |||
*<translate><!--T:4--> The latest version of <tvar name="sdformatter">[https://www.sdcard.org/downloads/formatter/sd-memory-card-formatter-for-windows-download/ SD Memory Card Formatter]</tvar></translate> | |||
*<translate><!--T:5--> The latest version of <tvar name="guiformat">[http://ridgecrop.co.uk/index.htm?guiformat.htm guiformat]</tvar></translate> | |||
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== Instructions == <!--T:39--> | === Instructions === <!--T:39--> | ||
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|-|<translate><!--T:42--> 32GB or smaller</translate>= | |-|<translate><!--T:42--> 32GB or smaller</translate>= | ||
=== What You Need === | |||
*<translate><!--T:5--> The latest version of <tvar name="guiformat">[http://ridgecrop.co.uk/index.htm?guiformat.htm guiformat]</tvar></translate> | |||
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=== Instructions === <!--T:39--> | |||
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Revision as of 02:09, 1 February 2024
This is an add-on section for formatting an SD card to FAT32.
This page is for Windows users only. If you are not on Windows, check out the Linux or Mac pages.
Choose your SD card size
What You Need
- The latest version of SD Memory Card Formatter
- The latest version of guiformat
Instructions
- Insert your SD card into your computer
- If the SD card has any files and folders on it, copy everything to a folder on your computer
- Run
SD Card Formatter Setup(the.exefile) in the downloaded .zip file with Administrator privileges, then install the program - Run
SD Card Formatterfrom the Start Menu - Select your SD card’s drive letter for "Select card"

Make sure you choose the correct drive letter, otherwise you might accidentally erase the wrong drive! - Ensure that "Quick Format" is selected
- Click "Format"
- Click "OK"
- Wait for the format to finish
- Click "OK"
- Close SD Card Formatter
- Run
guiformat.exe - Select your SD card’s drive letter for "Drive"

Make sure you choose the correct drive letter, otherwise you might accidentally erase the wrong drive! - Select a size for "Allocation unit size"
- If the SD card is 64GB, choose 32768
- If the SD card is larger than 64GB, choose 65536
- Ensure that "Quick Format" is selected
- Click "Start"
- Click "OK"
- Wait for the format to finish
- Click "Close"
- If the SD card had any files and folders on it before the format, copy everything back from your computer
| Your SD card will be formatted to exFAT at this point. The following steps will format it to FAT32. |
Common errors with guiformat
Failed to open device: GetLastError()=32
Close everything that may be using the SD card, such as any File Explorer windows. If it does not resolve the issue, try formatting the card to NTFS, then run GUIFormat again.
GetLastError()=1117
Your SD card write-protection switch may be enabled. The lock must be flipped upwards to allow writing to the SD card (including formatting).
What You Need
- The latest version of guiformat
Instructions
- Insert your SD card into your computer
- If the SD card has any files and folders on it, copy everything to a folder on your computer
- Run
SD Card Formatter Setup(the.exefile) in the downloaded .zip file with Administrator privileges, then install the program - Run
SD Card Formatterfrom the Start Menu - Select your SD card’s drive letter for "Select card"

Make sure you choose the correct drive letter, otherwise you might accidentally erase the wrong drive! - Ensure that "Quick Format" is selected
- Click "Format"
- Click "OK"
- Wait for the format to finish
- Click "OK"
- Close SD Card Formatter
- If the SD card had any files and folders on it before the format, copy everything back from your computer
SD Card not formatting or has some other issue.
Refer to the SD Clean guide.