Questions tagged [flash-memory]
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52 questions
0 votes
0 answers
85 views
How can I mount or repair this ExFat USB stick using my Macbook?
I have a 64 GB USB-C flash stick from Samsung that was new in October 2024, which I formatted with a tool from my car's manufacturer that it insisted on. Making it a ExFAT volume that contains map ...
1 vote
0 answers
290 views
Unable to install Mac OS X 10.4 onto USB flash drive
I am trying to install Mac OS X 10.4 onto a USB flash drive with the DVD. (not creating a bootable USB installer!) When I reach the "Select Destination" part of the installation, I select ...
1 vote
2 answers
143 views
How to find lost files and lost free space on flash card
Flash card is indicated mostly filled Simultaneously, I can't find any files of appropriate size % sudo du -ah 128K ./.fseventsd/fseventsd-uuid 256K ./.fseventsd 340M ./NORMAL/2022-08-05-...
0 votes
0 answers
492 views
Is there a way to find out how worn out the SSD storage is on an iOS device?
I am about to retire an iPhone 6S which has finally gotten a bit too slow for me. Out of curiosity, I'd like to find out how worn out the flash storage / SSD is on the device. I know that on macOS I ...
0 votes
0 answers
105 views
iPhone X will not boot, possible to data from flash memory?
I have an iphone X that suddenly decided to stop booting. It was getting full and I was trying to delete some photos and videos to free up space when suddenly it wouldn't let me delete any files. I ...
1 vote
2 answers
213 views
How to format a USB drive and increase its available size?
I have a 32 GB USB flash drive which is currently formatted to 261 MB: How can I reformat/erase that USB drive so that I access all 30.75 GB of it? Disk utility won't let me change the size of the ...
0 votes
1 answer
1k views
Is it okay to use an external flash drive to store a Photos Library?
I'm getting an M1 MacBook Pro from my employer which only has 512 GB of flash storage (my 2018 MBP has 1 TB), so I'll need to move my 350 GB Photos library to an external drive. I know that I could ...
1 vote
1 answer
495 views
How to connect a flash drive to a VMware VM when the drive is 'not readable'?
Introduction I'm running: High Sierra v10.13.6 VMware Fusion v11.5.1 I'm attempting to connect a flash drive (USB 3.0) to a virtual machine (Redhat). That virtual machine is a guest to my Mac host. ...
2 votes
2 answers
504 views
Other data taking up to much space on mac, can't figure out what this other data is
I found out my company's dropbox was syncing everything to my mac, I had selective sync on but somehow this changed. I then uninstalled dropbox to stop this syncing as choosing selective sync didn't ...
8 votes
1 answer
24k views
Disk Utility cannot erase USB drive (error -69877: couldn't open device)
Disk Utility (macOS Catalina 10.15.2) fails to erase my USB drive (64GB key, currently formatted in exFAT). /dev/disk2 (external, physical): #: TYPE NAME ...
2 votes
1 answer
2k views
Unable to format USB disk (Error: -69877: Couldn't open device)
I have an external USB stick (Kingston DataTraveler 3.0). I can read the files on it (I have some movies that I can play) but I can't add anything to it or delete anything that's on it. I've tried to ...
1 vote
1 answer
1k views
Create El Capitan installer thumb drive from Catalina
I recently got a 2019 MacBook Pro from work, and a couple of mid 2009 MacBook Pros from a yard sale. I have mostly been using Windows and Linux for the past 20 years. I'd like to make a El Capitan ...
2 votes
0 answers
347 views
Restore firmware on machine without MacOS
My daughter's Macbook Air is broken. She's a wild non-child and its likely to have been roughly treated and also left for years without charge, not updated (I told her!) and used on virus'y sites. ...
1 vote
2 answers
74 views
Can I replace a MBP 2012 SSD with the Flash storage from a MBP 2013?
My son's MBP (13-inch, Mid 2012) internal SSD has been acting strangely enough that I'm starting to wonder if it needs to be replaced (do SSDs fail?). I have a MBP (retina 15-inch, Early 2013) with a ...
4 votes
2 answers
440 views
Double Erased my 64GB flash drive, but failed both. How to fully erase it again and make it work?
TL;DR I formatted an USB drive on my AndroidTV which failed, and am now trying to fix it from my Mac. Right now I can see the drive in diskutil list but it neither shows up in Finder nor in Disk Util. ...