10-20-2020, 05:43 PM
(10-20-2020, 05:09 PM)ab1jx Wrote: How does NTFS get into the picture? Did a partition's type (just a byte I think) get changed? Does sfdisk -l show an NTFS partition now? Could have a corrupted superblock but it's probably ext4.
The original eMMCs seem to have started to fail, expect chaos. The super safe thing to do is probably copy the partition with dd to somewhere else then work with the copy. Several fdisk-type utilities can change a partition's type, I'd try to reset that to ext4 (on the copy). I don't think mount will mount it until it passes an fsck, you can specify an alternate superblock (number) to fsck. You can do a loop mount on a file made by dd and mount that volume almost like a normal partition.
Wait... Isn't the PBP only like a year old? How are the eMMCs failing already? What's the wear like? (I found a quick-and-dirty script at https://electronics.stackexchange.com/a/525525 in case you don't have a better way to read the wear information.)
I have a PBP on my wishlist for when life feels normal to me again, but if I can only expect its eMMC to last about 20% as long as most eMMCs, I might have to reevaluate that.