Filesystem question

Princess Nell · l33t Joined: 15 Apr 2005 Posts: 916

This is wrecking my head.

I need to copy data from an old microSDHC card to a new one. Both cards are the same size and show up as "exfat" under df -T. Both cards show disklabel type dos and Type HPFS/NTFS/exFAT in fdisk. Yet, there are files I cannot copy from old to new because of illegal characters. E.g.

Logicien · Posted: Tue Aug 29, 2023 12:18 am Post subject:

If you are sure that the source card is of the exact same size in sectors or at least smaller than the destination card you can dd it or cat it in the new card and you have an exact copy of the source on the destination. Well I don't know how to expand an exfat filesystem because I do it only on Ext4 filesystems.

Expand a partition and a filsystem is only needed when the source is smaller than the destination if you want all the space of the card. You never make a bit to bit copy when the source is bigger than the destination. I use Rsync for data copy. It's more relevant than cp.
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Paul

Hu · Moderator Joined: 06 Mar 2007 Posts: 21635

What illegal characters are there? That name appears to be representable in basic ANSI. It has no high characters, nothing that requires Unicode, and no control characters.

Princess Nell · l33t Joined: 15 Apr 2005 Posts: 916

https://en.wikipedia.org/wiki/Exfat list the allowed characters. So in this case, it's the colon, ':'.

I have another album on the card which has colons in every song title, but only some of those don't copy.

As I have only one card slot, I'm copying the old card contents to my home dir (ext4) temporarily. Here, the files that don't copy show up with colon characters, but other files that when displayed on my phone have colons in them, are displayed with underscores instead.

I vaguely remember that in the past I needed to fix some song titles in the player software on my phone, so maybe I'll just rename the files (s/:/_/) and check that the song titles are correct on the phone, which they probably are considering that's just ID3 tags.

That's a possible workaround. Still don't understand how the colon'd files came off the old sd card.

sabayonino · Veteran Joined: 03 Jan 2012 Posts: 1015

Hi .
I think file names contain some special characters and cp command doesn't recognized or the file name is splitted and comma/spaces etc are the issues

Try rsync to copy files over (Ex)FAT32 filesystem

sublogic · Posted: Tue Aug 29, 2023 9:13 pm Post subject: