Hmdrpifor
Posts: 1
Joined: Thu Jan 30, 2020 1:35 am

SD card. Backup issue

Thu Jan 30, 2020 1:46 am

Using windows 10
Upon insertion of RPi system SD card windows open two virtual drives Recovery (E:) and boot (G:)
Not the single one I expected to backup.
Prior to opening drives there is a “request to format” message - ignored + a few other error messages.
Next step?

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Burngate
Posts: 6329
Joined: Thu Sep 29, 2011 4:34 pm
Location: Berkshire UK Tralfamadore
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Re: SD card. Backup issue

Thu Jan 30, 2020 11:51 am

Windows of any variety refuses to read a Linux-based file system, so is not much use for backing up your SD card.
The best it could do is make an image of the whole card - but that might not be helpful if you need to reimage a fresh card.

Better would be to use your Pi - which understands its own filesystem - to back up your card to another card. For that, you'll need a USB card reader attached to your Pi, with the fresh card in it.

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Skraaj
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Joined: Wed Nov 20, 2019 11:35 pm
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Re: SD card. Backup issue

Fri Jan 31, 2020 5:43 am

Hmdrpifor wrote:
Thu Jan 30, 2020 1:46 am
Using windows 10
Upon insertion of RPi system SD card windows open two virtual drives Recovery (E:) and boot (G:)
Not the single one I expected to backup.
Prior to opening drives there is a “request to format” message - ignored + a few other error messages.
Next step?
Windows cannot read linux filesystem and you won't be able to just copy files. As Burngate suggested - make a backup of the whole card. You can do that with http://hddguru.com/software/HDD-Raw-Copy-Tool/ or you can use https://win32diskimager.download/, but I find Raw Copy Tool easier to use.
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rpdom
Posts: 17424
Joined: Sun May 06, 2012 5:17 am
Location: Chelmsford, Essex, UK

Re: SD card. Backup issue

Fri Jan 31, 2020 5:51 am

If you do make a copy to file of the whole card you must note that you can only put that image back on a card of exactly the same size or larger.

The actual size of any SD card varies slightly. The stated capacity is only an approximation. For example, two seemingly identical 64GB cards could have slightly different sizes.

It is better to use the SD Card Copier that comes with the Raspbian Desktop version. That copies only the used space on the card and will adjust it to fit the destination card - as long as the card has enough capacity to hold the contents.
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