How to fix buffer_write(fd) (8, ret=-1) in Cydia iOS 9.2-9.3.3
Error : “failed in buffer_write(fd) (8, ret=-1)”
1: Remove BigBoss Repo (optional)
2: Add Source
3: Install "Stashing for iOS 9.2 - 9.3.3"
4:Step 3: Search for and install the “Stashing for iOS 9.2 – 9.3.3” tweak as shown in the screenshot below.
5: Restart your Springboard
With this “Stashing for iOS 9.2-9.3.3” tweak installed, Cydia will install tweaks on the iPhone’s or iPad’s data partition, saving valuable space in the process.
Not everyone will benefit from the fix above, so before you start to think that’s it for you, try out the second method below.
Step 1: Look for and install Apple File Conduit 2 from Cydia on your device.
Step 2: Now install iFunbox onto your computer and then connect your device to it.
Step 3: Next, launch iFunbox and once running, from the left column where your device is shown as connected, click the Raw File System.
Step 4: Look on the right-hand column where the files and folders are displayed and find and rename the file /.cydia_no_stash to /.cydia_no_stash-
Step 5: Now that you have done the above, you should disconnect your device from your computer and open up Cydia. You should see that it is preparing the file system. This should now give you a working jailbreak and enable you to use Cydia the way it was intended.
Tip If you have iFile on your device, you can use that instead of iFunbox.