Error erasing disk error number 69874 0. ) Operation failed…" Nov 26, 2015 · Make ...
Error erasing disk error number 69874 0. ) Operation failed…" Nov 26, 2015 · Make sure you are not working from the volume you wish to make into the installer drive. Oct 18, 2011 · I downloaded the M4 version of Sequoia and used terminal to create a bootable USB installer (like I have always done). 3 - I created a batch using Ventura/Monterey/Mojave and they all completed beautifully, but for some reason the last two Sonoma installers failed and returned "Error erasing disk error number (-69888, 0)". I've been finding that it takes Disk Utility two attempts to erase some drives. " If your Mac unibody 13inch 2010 has any version of osx lower than Mavericks 10. Within Disk Utility you may need to click "View" and select "Show All Devices" before the physical drives appears on the left pane of Disk Utility. Are you booting into Recovery Mode, Internet Recovery Mode, or from a bootable USB installer? You cannot erase or create a Fusion Drive while booted from the drives which will be part of the Fusion Drive. Sep 29, 2021 · As it turns out, a lot of affected users that were also dealing with this issue on macOS have managed to fix the issue by using Disk Utility to create a new partition map by forcing the utility to show all devices and erasing the problematic partition. : (-69874)" error when i scan the parent drive under disk utility first aid . If you wish to continue type (Y) then press return: y Erasing disk: 0% 10% Error erasing disk error number (22, 0) An error occurred erasing the disk. Apr 26, 2024 · Learn how to fix the 'Couldn't Modify Partition Map 69874' error with step-by-step solutions and a detailed tutorial. The problem I am facing is that I can neither partition nor erase the Disk. If you can not erase/ reformat then it is trash. Disk Erase Error Couldn't Unmount Disk Mac Error 69888 more Jan 6, 2022 · I get this error : Ready to start. (-69874) Jan 28, 2024 · The 14. Aug 2, 2022 · PCEBTA社区 - 专注于Windows 11系统的安装、激活、驱动程序下载、优化教程与技术支持。获取最新的Win11更新资讯、解决方案和资源分享，助力每位计算机爱好者和开发者！ This is the output in Disk Utility: Disk Utility cannot modify this disk because it contains CoreStorage physical volumes. ' on Mac? This article help you resolve it and get back the lost data. To resolve this, you must first erase the disk and set the Scheme to GUID Partition Map. Feb 18, 2018 · I am heavily struggling with a corrupted USB. Sep 28, 2021 · A error occurred erasing the disk. Dec 20, 2022 · Within Disk Utility you may need to click "View" and select "Show All Devices" so that the physical drives appear on the left pane of Disk Utility. Solution Disk Erase Failed with error Couldn't unmount disk mac error 69888 PTBR - Mostro neste video a solução para o Error erasing disk error number (-69888, 0) A error occurred erasing the disk This error will occur if the usb stick and the main drive have the same name - typically: Untitled Apr 7, 2020 · Started erase on disk2 Unmounting disk Creating the partition map Error: -69877: Couldn't open device ~ diskutil eraseDisk free EMPTY /dev/disk2 Started erase on disk2 Unmounting disk Creating the partition map Error: -69877: Couldn't open device My USB drive appears as read only when i do CMD+I, I tried repairing the permissions but that Oct 13, 2023 · PCEBTA社区 - 专注于Windows 11系统的安装、激活、驱动程序下载、优化教程与技术支持。获取最新的Win11更新资讯、解决方案和资源分享，助力每位计算机爱好者和开发者！ Dec 15, 2016 · I tried Disk Utility First Aid and got this message: "Fixing damaged partition map. Apr 24, 2020 · I show in this video the solution to the disk disassembly problem in macOS. Jan 29, 2018 · I have a PNY 128gb flash drive that I can no longer modify (can't delete files). Then, you can mount that image and attempt recovery there. You may vote for any posts you find helpful, or search the Community for additional answers. u盘显示未未装载，抹掉就显示错误：未能修改分区图 -69874 Sep 5, 2016 · How to fix Error erasing disk error number (-69888, 0)If this helped you, give it a thumbs up! and Subscribe! Thank you! MacBook Pro 13″, macOS 11. Macbook Air 2013（A1466）格式化硬盘出现了一个小问题： 使用磁盘工具格式化硬盘时 会提示 未能卸载硬盘 （-69888）或类似报错 不要开机进入recovery系统下操作~ 因为你进入的是恢复 磁盘，恢复磁盘是基于mac的。… Oct 31, 2016 · Capacity: 3TB Number of sub-partitions: 0 Type: Disk. It takes forever to show up on disc Utility. Feb 20, 2023 · I have been trying to create a macOS installer on a USB stick using Disk Drill and command line but I keep getting the error: Error erasing disk error number (-69888, 0) Jun 8, 2020 · Createinstallmedia failed and can't erase/re-write on USB device I tried setting up a bootloader USB for a High Sierra fresh install with an SSD upgrade for my Macbook pro. Sign in to Apple Support Community Email or Phone Number Password Create Your Apple Account Aug 18, 2022 · The disk came from a Windows 10 machine and I wanted to wipe and install another OS but have been struggling. 0. Just wanted to share what worked for me. Sep 1, 2019 · Trying "How to create a bootable installer for macOS" El Capitan ends up terminal saying: Error erasing disk error number (-69888, 0) A error occurred erasing the disk. If the disk mounts, try this: You can try some software level data recovery like Disk Drill or if the Disk is formatted as macOS Extended you can use Disk Warrior. How to Troubleshoot error message operation failed when formatting and partitioning HardDrive • How to fix Mac Format & Partition Disk Uti …more Oct 12, 2010 · Disk Erase failed with the error- Operation timed out I've checked my computer- Mac Book White in Apple store, everything is fine just the hard disk has been corrupted. Jun 5, 2022 · 制作启动盘报错 The erased disk did not mount. Nov 27, 2025 · Seeing 'Erase process has failed' on MacBook or destkop Mac when formatting drives? Learn how to resolve it on your Mac's internal and external drives in this post. May 23, 2017 · 0 Create a partition on the disk first $ diskutil partitionDisk /dev/disk2 MBR FAT32 UNTITLED 100% IMPORTANT: Replace disk2 with your appropriate disk number. I have run the creation and attaching of the drive with sudo to avoid ownership mismatch, even declaring the virtual drive size with by 8192m and 8g and 16384m and 16g. `How do i fix this error? 3 days ago · Solutions to fix 'Error: -69877: Couldn't open device' in Terminal or 'Couldn't open device. Jun 11, 2020 · Gonna try the process from Catalina on the HDD now, i hope it will work this time. Actually it completely froze my Mac. You can find that by diskutil list command Now you can proceed with erase. Jan 19, 2023 · In this video, I demonstrate how to solve the disk disassembly problem in macOS. 苹果重做系统盘出现这个错误该怎么解决，有无 Sep 29, 2022 · MacBook Air 发布日期 2022年9月29日 上午7:10 Aug 4, 2023 · 1. Apr 14, 2023 · Solution for error (-69874) when mounting/formatting external disk I had trouble reformatting an external disk that I wish to use for Time Machine and storage. I. , /dev/diskX where X indicates your device's number or device identifier such as /dev/disk2). 14 hours ago · Failed to erase, partition, or repair your drive due to the error, 'Couldn't modify partition map. Feb 7, 2025 · If you don’t know How To Fix Error Erasing Disk On Mac, this video is for you. We’ll show you how to fix it. When using Erase All Content and Settings, if you see a message explaining that other volumes need to be erased before you can erase all content and settings, you might have used Boot Camp to install Microsoft Windows. apple. This article aims to help you resolve all sorts of issues you could experience when making a boot disk for macOS. I see you are having some issue erasing an external hard drive. Aug 2, 2024 · 首先，排除你的 Install macOS Monterey. Mar 11, 2021 · First run sudo diskutil list to find the relevant disk3, or whatever, to determine X - check the size and make sure it's the right disk! WARNING: You could erase another disk (such as backup drive) if you get the X number wrong. e. If you wish to continue Sep 22, 2025 · My MacBook Pro (M1 Max) doesn’t recognize a SanDisk Portable SSD (2TB) that works on older Macs running macOS Big Sur or Windows PCs running Windows 10 or Windows 11. If you receive an error, then try again immediately to erase it. This is what shows: ---------------------------------------------------------------- Failed to create macOS installer Output: Started erase on 解决方案可能比你想象的要简单！ 如果在尝试创建可启动的USB时收到“Error erasing disk error number (-69888, 0) A error occurred erasing the disk. I have plenty of space on the mac to do it. That… Boot from cd or external hd and open terminal this code erase the MBR: # dd if=/dev/zero of=/dev/disk0 bs=446 count=1 this one erase the partition table also: # dd if=/dev/zero of=/dev/disk0 bs=512 count=1 If you erase just the mbr you could use testdisk to attempt to recover data (in case you don't have erased the disk label). How should I proceed from here? The usb drive is brand new, and I bought it just for the purpose of installing the new Jul 20, 2020 · Password: Ready to start. I can also not find a 重装系统盘报错. Repair a storage device in Disk Utility on Mac - Apple Support Disc Utility can repair some issues but if you try multiple times and are getting these kinds of errors, it's likely that the disk has failed. The selected partition won't be Jul 7, 2022 · MacBook, macOS 10. I was working on my Mac (I'm a graphic designer) and suddenly my external Seagate 1Tb drive wouldn't allow me to access it. 4 发布日期 2021年8月5日 上午3:21 Whenever I attempt the process, I get the following error: "Error erasing disk error number (-69618, 0)" I have tried this with one other external drive and gotten the same error message. 2 and 14. I have very important data in the disk. The operation couldn’t be completed. By the time I wanted to erase it, I can't erase and appears "Disk Erase failed with the error- Operation timed out". ) Aug 17, 2018 · Use the DD command to erase the partition map first. 0. You can do this by unmounting the USB drive in Disk Utility and checking the device's name (i. Dec 15, 2019 · Couldn’t modify partition map. Aug 23, 2020 · Recently I've been encountering difficulty erasing drives with Disk Utility. 使用终端输入以下命令后回车diskutil list继续在终端里输入以下命令后回车diskutil unmountDisk force disk0（disk0替换成客户电脑上比较大的分区）完成后重新到 MacOS在恢复界面格式化硬盘时出现未能卸载硬盘（-69888）等问题的解决方案 ,电脑维修论坛 Jun 27, 2024 · mac格式化优盘报错：couldn’t modify partition map. If it still happens, the try booting into Safe Mode to try the Terminal command again as yo may have some third party software installed that is interfering with the normal operation of Jun 24, 2010 · Does it not show up in Disk Utility or with the Terminal command diskutil list? 最近给一台老Macbook Air 2013（A1466）格式化硬盘为APFS文件系统时出现了一个小问题： 使用磁盘工具格式化硬盘时 会提示 未能卸载硬盘 （-69888）或类似报错 以下为解决方案（建议在recovery系统下输入） 使用终… Jul 29, 2020 · Erasing disk: 0% 10% Error erasing disk error number (22, 0) An error occured erasing the disk. Try deleting the app and emptying the Trash. 6. Mar 22, 2018 · I have splited the internal disk to 2 drives, one for Mac and one for windows. En esa partición tenia Windows que debe borrar mal. 9 - The boot installer for usb is not possible. Erase the whole physical USB stick as GUID partition and MacOS Extended (Journaled). Mar 8, 2021 · I am trying to fix my external hard disk but when I use first aid from disk utility, it throws an error: My Mac was able to read this hard disk till yesterday before I tried to force mount it using terminal. Nov 21, 2016 · Here's a picture of the full log: Of course, some information is censored, but I had reasonably important info on that drive. First I tried to use Patched Sur from Bensova’s github repository. MacBook Pro with Retina display, macOS Sierra (10. Oct 21, 2015 · 0: *4. If you are using it for Mac only then select a format specifically for macOS. It will be something like /dev/disk1 Unmount the volume of the usb stick in Disk Utility. We would like to show you a description here but the site won’t allow us. Erasing disk: 0% 10% Error erasing disk error number (22, 0) An error occurred erasing the disk. Jan 17, 2023 · To only erase your Mac, learn how to erase a Mac with Apple silicon or erase an Intel-based Mac. If you wish to continue type (Y) then press return: y Erasing Disk: 0% 10% Error erasing disk error number (-69888, 0) A error occurred erasing the disk. To continue we need to erase the volume at /Volumes/Catalina. Then, when I reinsert my usb drive, it becomes not readable, saying The disk you inserted was not readable by this computer. Mar 13, 2023 · Method 1: Creating a New Partition Map As it turns out, a lot of affected users that were also dealing with this issue on macOS have managed to fix the issue by using Disk Utility to create a new partition map by forcing the utility to show all devices and erasing the problematic partition. Jun 30, 2021 · Did you use Disk Utility to format the flash drive as Mac OS Extended (GUID) before the Terminal command? Apr 21, 2020 · Error: -69888: Couldn't unmount disk Ask Question Asked 5 years, 10 months ago Modified 3 years, 11 months ago Apr 12, 2018 · A traves de Terminal queria borrar la partición Apple_Boot Recovery HD con diskutil eraseVolume HFS+ Blank /dev/disk0s3 Elk resultado fue Started erase on disk0s3 Recovery HD Unmounting disk Error: -69874: Couldn't modify partition map Q ue quiere decir conError: -69874? Tengo un Mac High Sierra. Reformatting or Erasing yielded -69874. This happened after installing partition wizard on windows partition to reformat an exteral 1TB disk. 0 and my computer's USB ports are both 3. I gave up on the actual PC as I made little progress with USB boot tools. Feb 3, 2026 · Getting 'Unmounting disk. Tried quick search and deep search on testdisk (it said something like filesystem was OK, partition table damaged. Jun 9, 2021 · Looks like this: Erasing “LaCie Rugged FW/USB Media” (disk4) and creating “LaCie” Unmounting disk The volume on disk4 couldn’t be unmounted because it is in use by process 0 (kernel) Couldn’t unmount disk. Download & try again. I've tried to reformat it using Disk Utility but I get the following message and my usb is unmounted: I've followed When trying to erase drives on a Mac, getting errors like "Couldn't Open Device 69877" can be annoying, but most of the time, the problem can be fixed by following the right steps. Apr 6, 2022 · I got errors -69845 and -69874 from Disk Utility. Mar 11, 2024 · Seagate external HDD (-69874) Hello. Started erase on disk1 Unmounting disk Error: -69888: Couldn't unmount disk sudo diskutil unmountDisk /dev/disk1 Unmount of disk1 failed: at least one volume could not be unmounted Unmount was dissented by PID 0 What is going on here? Disk Info Here is some disk info: diskutil list /dev/disk1 (external, physical): : TYPE NAME SIZE IDENTIFIER Mac pro上的USB只有读的权限，尝试将其格式为能在MacBook和windows上都可以自由读写的EXFat，显示报错：未能修改分区图。：（-69874）。请提供一下解决方案，谢谢。 Oct 19, 2019 · 本文详细介绍如何使用8G以上U盘制作MacOS Catalina系统安装盘，并在Mac电脑上安装新系统。步骤包括：用磁盘工具格式化U盘，从AppStore下载系统程序包，通过终端执行命令创建安装介质，以及使用有线键盘解决启动时蓝牙键盘无法识别的问题。. CD to / or before you run the commands. I got a SSD/USB mounting and can mount the drive on my Mac but when I use diskutil to reformat it I get the error: Jul 19, 2020 · Whenever I attempt the process, I get the following error: "Error erasing disk error number (-69618, 0)" I have tried this with one other external drive and gotten the same error message. 3 Sonoma opencore fails to make a usb installation disk with the error the disk failed the partitioning process during the creation the error is as follows " FAILED TO CREATE MACOS I STALLER OUTPUT STARTED ERASE ON DISK 2 I have attempted to install macOS Big Sur on my computer signified here using OpenCore Legacy Patcher v. 0 TB disk3 When I try to erase it from Terminal (diskutil eraseDisk APFS External /dev/disk3) I get this: Started erase on disk3 Unmounting disk Creating the partition map Error: -69825: Wiping volume data to prevent future accidental probing failed Is there anything else I should try before I wipe the drive with a hammer? Oct 28, 2019 · Hello Oasazin and welcome to Apple Support Communities. 12) Posted on Mar 22, 2018 8:26 PM Sep 8, 2018 · This thread has been closed by the system or the community team. My other HDD's have 2 partitions (according to testdisk the damaged disk has a Linux [L] & LBA [E] partition). ”的错误消息，请确保USB驱动器当前未被系统或应用程序使用（例如打开的Finder窗口或终端中的当前目录）。 - grzechoo 5 May 3, 2025 · FYI, for an Intel Mac, using Disk Utility to erase the physical SSD will destroy all data on the SSD. 1 and 14. Apr 24, 2020 · error erasing disk error number (-69618, 0) A error occurred erasing the disk. especially the "Restore" since it also resets the internal SSD which may have a better chance at fixing some SSD issues. What is wrong ? Thanks for your help. : (-69877)' in Disk Utility when erasing Mac hard drive or external hard drive, USB, SD card, etc. The process starts and copies over, but then fails ERROR: I get the following results : To continue we need to erase the volume at /Volumes/Untitled. Couldn't open disk. May 23, 2020 · Disk Recovery How can I recover or rebuild? Disk Utility > First Aid returned "Fixing damaged partition map. Hi, I’m using an iMac 21. Dec 15, 2019 · Disk Utility>View>Show All Device > Re-intilize the parent drive. 5 inch late 2012 with OS Catalina on it right now. 2. : (-69888) Operation failed… Final detail: unsurprisingly, ejecting the disk doesn't work. The disk is empty and there is not partition created. Use command line distil instead. Posted on Jan 6, 2022 1:18 PM Sep 17, 2025 · This article explains what 'Couldn't unmount disk 69888' on the MacBook Pro and other Mac models means and what you should do if you receive 'Couldn't unmount disk 69888' when eliminating, partitioning, or destroying internal or external hard drives, USB disks, Time Machine backup disks, etc. app本身是完整没有问题的；其次，看内置盘空间足够；最后，确认当前用户有足够的权限。 如果是，多数时候运行正常，偶尔出现此问题， 那么对于Monterey的，的确有类似问题。严重的情况，需要重新启动系统。 我曾经为我们自己做了个脚本，在github上叫做 Jan 27, 2026 · As I tried to partition a 3TB drive into a 2TB partition for Time Machine and a 1TB partition for specific files backup, I get this error: Couldn’t modify partition map because file system verification failed. Mar 10, 2024 · When using a consumer external drive, you need to make sure to erase the whole physical drive as GUID partition and MacOS Extended (Journaled) in this case. (com. I'd appreciate your help, McBoat MacBook Air, macOS Sierra (10. Oct 23, 2025 · When you see that you 'couldn't modify the partition map, : (-69874)' message on a Mac, it usually means your OS tried to change something on a drive, like erasing or partitioning it, and it failed. First run sudo diskutil list to find the relevant disk3, or whatever, to determine X - check the size and make sure it's the right disk! WARNING: You could erase another disk (such as backup drive) if you get the X number wrong. I have had this happen with both 14. 12. Needed to erase and reinstall. 8 and it fails out with the response cited here once the Big Sur package has been set in place on the attached 32-gigabyte PNY flash drive. Jan 19, 2026 · The "Couldn't modify partition map (-69874)" is a partition map problem that usually happens when you are partitioning or formatting the hard disk, and this error is usually caused by a file system verification failure. : (-69874) external exfat drive is missing partial data and i get "Couldn’t modify partition map. @James Brickley's suggestion for a DFU Firmware Revive or Restore is a good one. Apr 12, 2024 · If you see an error when you try to move or copy files or erase a disk, there are a number of possible reasons. It'll do everything it can to read every sector of the disk, retrying a reasonable number of times (which is adjustable) before it gives up. It won't mount, either, and I really want it back. Feb 28, 2015 · What I found when I got Error erasing disk error number (-69888, 0) was that there was an extra space between the backslash after /Volumes/ that occurred from the website copy and paste. After manually restarting my Mac I noticed that my External HDD, though working, it won't mount. : (-69879)' when erasing a drive on Mac? Learn how to fix it on your internal and external drive in this post. Does anyone have any ideas about the issue and how to resolve it? Jul 19, 2020 · So erasing the drive using Disk Utility works without any errors? Are you erasing the whole physical drive with Disk Utility or just an existing volume on the USB drive? 3 days ago · Fix 'couldn't unmount disk 69888' on Mac or MacBook Pro when erasing, partitioning, or deleting the internal volumes or external hard drives, USBs, Time Machine backup disk, etc. . Device: disk2 The disk itself is formatted as Mac Journaled (GUID). Error erasing disk error number (-69888, 0) A error occurred erasing the disk. The disk does not want to mound. DiskManagement error -69874. Will the Disk mount in your friend's macOS? Try to avoid attempting to repair the Disk in Disk Utility, although rare it can causes issues when attempting to recover data. To continue we need to erase the volume at /Volumes/MyVolume. Hay solución? Error erasing disk error number 69888, 0 solved Tutorial Technical Knowledge Channel 809 subscribers Subscribe Feb 3, 2026 · While it's not easy to create a bootable USB installer for macOS Tahoe or other versions, you may encounter errors, such as can't download macOS Tahoe, the macOS USB installer not booting, or get stuck in the process. 制作启动盘报错 The erased disk did not mount. 1) Posted on Nov 21, 2016 1:30 PM I had some luck in the past with the following procedure, but I have to warn you IF YOU GET THE WRONG DEVICE ID TOU CAN ERASE ALL INFORMATION ON YOUR COMPUTER SO BE CAREFUL! Use Disk Utility info window to identify the device number for your usb stick. 13 Posted on Jul 7, 2022 11:39 AM Nov 13, 2023 · Did you erase the whole physical drive or just the existing volume? Within Disk Utility you may need to click "View" and select "Show All Devices" before the physical drives appear on the left pane of Disk Utility. erreur -69874 on disk management Jul 8, 2022 · Sounds like the installer may be corrupt or perhaps Apple introduced a bug with the installer when creating a bootable macOS USB installer. The drive is USB 2. Fortunately, when I started EaseUS Data Recovery it found the disk and, when scanning for lost files, the disk mounted on the desktop and the data all appears to be intact. The operation couldn't be completed. My Mac would present the 750 GB drive as only containing 2 MB. jbybx jra ryityimy vmyvwp dfjzyhw pcbg flmivd bijljf cqnpgm uicmlbx
