Data Recovery

Choose NTFS for a Windows-only external SSD, APFS for Mac-only use, and exFAT when current Windows and Mac computers both need write access. Back up or recover files first, confirm the physical SSD, and use quick format for routine reuse.

Do not erase a write-protected USB drive until needed files are copied or recovered. Check a physical lock switch, try another port and computer, inspect read-only attributes, and consider media failure; repeated write protection can mean the flash memory is worn out.

A RAW label means the operating system cannot mount the expected file system; formatting would create a new one and may overwrite recovery evidence. Stop using the drive, recover files to another disk, verify them, then format the confirmed source as NTFS, exFAT, or another required system.

If the PC drive is NTFS, macOS may read it but normal write support is limited. Copy the files, then use exFAT for a drive shared by Mac and PC or APFS when the drive will become Mac-only.

Quick format rebuilds file-system metadata but is not a secure erase; recovery may remain possible until new data overwrites old sectors. Stop using the drive, recover what matters, then quick-format only the verified target.

Modern HDDs and SSDs are low-level formatted at the factory; ordinary users normally need a file-system format, not a true low-level operation. If data matters, do not run overwrite, Secure Erase, or sanitize commands before recovery.

Copy files from the Mac-readable volume before converting it. Use exFAT when the drive must remain writable on both Mac and Windows, or NTFS when it will become Windows-only; Windows may not read APFS or HFS+ without extra software.

A genuinely new drive normally needs GPT initialization, a volume, and a file system before use. Disconnect similar data drives first, then choose NTFS, APFS, exFAT, or a Linux-native system according to the computer and sharing needs.

Identify the correct Linux device with lsblk, unmount its partition, then choose ext4 for general Linux use unless XFS or Btrfs features are specifically required. Recover missing files before running mkfs.

For a Windows 7 system drive, NTFS is the normal choice; for a removable drive shared with other devices, verify whether exFAT is supported. Back up first and format from Disk Management only after checking capacity and disk number.