<\/span>What Are Bad Sectors?<\/span><\/h2>\r\nEvery hard drive stores data in small units called sectors, usually 512 bytes or 4 KB each. A bad sector is a sector that no longer responds to read or write requests. Whatever was stored there becomes hard or impossible to access, and the drive may slow down or freeze each time it stumbles on one.<\/p>\r\n
Bad sectors come in two flavors:<\/b><\/p>\r\n\r\n\t- Logical bad sectors<\/b>, sometimes called soft bad sectors, are software-level errors. The disk surface is fine, but the data in the sector got scrambled, often after a power cut or a system crash. These can usually be fixed by overwriting the sector with fresh data.<\/li>\r\n\t
- Physical bad sectors<\/b> are spots with real damage, such as a messed-up platter surface, a head crash, flash memory cells that wore out after too many write cycles (in the case of SSDs), or a factory defect. Unfortunately, no tool can repair them. The drive can only mark them as unusable and shift work to spare sectors.<\/li>\r\n<\/ul>\r\n
That said, the type matters less than your first move, which should always be to recover data from a drive with bad sectors<\/a> before any repair attempt.<\/p>\r\n<\/span>Can You Recover Data from a Hard Drive with Bad Sectors?<\/span><\/h2>\r\nYes, in most cases, you can recover data from a hard drive with bad sectors if (and this is really important) you image the entire drive before you let any repair tool touch it.<\/p>\r\n
⚠️ Important:<\/b> As explained earlier, every read and write operation puts stress on a failing drive, and that includes the operations repair tools run behind the scenes. Once your drive’s contents are saved on a healthy disk as an image file, you can scan and retry as many times as you want without touching the original again.<\/div>\r\nHow much you can get back also depends on how badly the drive is damaged. If your computer can still detect the drive on a physical level, you have a realistic shot at recovering data from a hard drive with bad sectors using specialized software.<\/p>\r\n
There are two things worth checking before you start:<\/p>\r\n
\r\n\t- whether the drive shows up in Disk Management<\/b> with its correct capacity (even if you can’t open it, the drive appears as RAW<\/a>, Windows asks you to format it<\/a>, or it freezes during read\/write operations),<\/li>\r\n\t
- and what its S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology) health data looks like.<\/li>\r\n<\/ul>\r\n
Here’s a quick way to check if your computer can still detect the drive:<\/b><\/p>\r\n\r\n\t- Right-click the Start<\/b> button and choose Disk Management<\/b>.
![\"disk](\"\/howto\/wp-content\/uploads\/2026\/07\/disk-management-1.jpg\")
<\/li>\r\n\t- Find your drive in the lower part of the window.
![\"disk](\"\/howto\/wp-content\/uploads\/2026\/07\/disk-management-drives.jpg\")
<\/li>\r\n\t - Check the capacity listed next to it. It should match the drive’s real size, give or take. The numbers never match exactly because drive makers count in decimal while Windows counts in binary, so a smaller figure is normal. The table below shows what common drive sizes look like in Disk Management<\/b>:<\/li>\r\n<\/ol>\r\n
<\/p>\r\n
- \r\n\t
- Logical bad sectors<\/b>, sometimes called soft bad sectors, are software-level errors. The disk surface is fine, but the data in the sector got scrambled, often after a power cut or a system crash. These can usually be fixed by overwriting the sector with fresh data.<\/li>\r\n\t
- Physical bad sectors<\/b> are spots with real damage, such as a messed-up platter surface, a head crash, flash memory cells that wore out after too many write cycles (in the case of SSDs), or a factory defect. Unfortunately, no tool can repair them. The drive can only mark them as unusable and shift work to spare sectors.<\/li>\r\n<\/ul>\r\n
That said, the type matters less than your first move, which should always be to recover data from a drive with bad sectors<\/a> before any repair attempt.<\/p>\r\n
<\/span>Can You Recover Data from a Hard Drive with Bad Sectors?<\/span><\/h2>\r\n
Yes, in most cases, you can recover data from a hard drive with bad sectors if (and this is really important) you image the entire drive before you let any repair tool touch it.<\/p>\r\n
⚠️ Important:<\/b> As explained earlier, every read and write operation puts stress on a failing drive, and that includes the operations repair tools run behind the scenes. Once your drive’s contents are saved on a healthy disk as an image file, you can scan and retry as many times as you want without touching the original again.<\/div>\r\nHow much you can get back also depends on how badly the drive is damaged. If your computer can still detect the drive on a physical level, you have a realistic shot at recovering data from a hard drive with bad sectors using specialized software.<\/p>\r\n
There are two things worth checking before you start:<\/p>\r\n
- \r\n\t
- whether the drive shows up in Disk Management<\/b> with its correct capacity (even if you can’t open it, the drive appears as RAW<\/a>, Windows asks you to format it<\/a>, or it freezes during read\/write operations),<\/li>\r\n\t
- and what its S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology) health data looks like.<\/li>\r\n<\/ul>\r\n
Here’s a quick way to check if your computer can still detect the drive:<\/b><\/p>\r\n
- \r\n\t
- Right-click the Start<\/b> button and choose Disk Management<\/b>.<\/li>\r\n\t
- Find your drive in the lower part of the window.
<\/li>\r\n\t- Check the capacity listed next to it. It should match the drive’s real size, give or take. The numbers never match exactly because drive makers count in decimal while Windows counts in binary, so a smaller figure is normal. The table below shows what common drive sizes look like in Disk Management<\/b>:<\/li>\r\n<\/ol>\r\n
<\/p>\r\n
- Find your drive in the lower part of the window.
- and what its S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology) health data looks like.<\/li>\r\n<\/ul>\r\n
- Physical bad sectors<\/b> are spots with real damage, such as a messed-up platter surface, a head crash, flash memory cells that wore out after too many write cycles (in the case of SSDs), or a factory defect. Unfortunately, no tool can repair them. The drive can only mark them as unusable and shift work to spare sectors.<\/li>\r\n<\/ul>\r\n
![\"disk](\"\/howto\/wp-content\/uploads\/2026\/07\/disk-drill-smart-info.jpg\")
<\/p>\r\n![\"disk](\"\/howto\/wp-content\/uploads\/2025\/07\/disk-drill-6-install.jpg\")
<\/li>\r\n\t![\"create](\"\/howto\/wp-content\/uploads\/2026\/07\/create-backup-disk-drill-disk-selection.jpg\")
<\/li>\r\n\t![\"disk](\"\/howto\/wp-content\/uploads\/2026\/07\/disk-drill-backup-progress.jpg\")
<\/li>\r\n<\/ol>\r\n![\"attach](\"\/howto\/wp-content\/uploads\/2026\/07\/attach-disk-image.jpg\")
<\/li>\r\n\t![\"disk](\"\/howto\/wp-content\/uploads\/2026\/07\/disk-image-search-for-lost-data.jpg\")
<\/li>\r\n\t![\"disk](\"\/howto\/wp-content\/uploads\/2026\/07\/disk-drill-scanning-in-progress.jpg\")
<\/li>\r\n\t![\"disk](\"\/howto\/wp-content\/uploads\/2026\/07\/disk-drill-file-selected.jpg\")
<\/li>\r\n\t![\"disk](\"\/howto\/wp-content\/uploads\/2026\/07\/disk-drill-destination-selected.jpg\")
<\/li>\r\n<\/ol>\r\n![\"victoria](\"\/howto\/wp-content\/uploads\/2026\/07\/victoria-test-and-repair.jpg\")
<\/li>\r\n\t![\"victoria](\"\/howto\/wp-content\/uploads\/2026\/07\/victoria-remap-and-scan.jpg\")
<\/li>\r\n\t![\"run](\"\/howto\/wp-content\/uploads\/2026\/07\/run-as-administrator.jpg\")
<\/li>\r\n\t![\"chkdsk](\"\/howto\/wp-content\/uploads\/2026\/07\/chkdsk-r.jpg\")
<\/li>\r\n\t