--- title: "Blog - Technologies and insights not only from the world of data recovery - EXALAB" description: "Practical examples from IT and data recovery across all media types including HDD, SSD, RAID, mobiles, and more. Interesting reading for both amateurs and profe" url: "https://www.exalab.cz/en/blog/from-practice?start=20" date: "2026-06-19T22:57:46+00:00" language: "en-GB" --- # BLOG - From Practice Practical examples from the world of IT and data recovery, across all types of media including HDD, SSD, RAID, mobiles, memory cards, and more. ![Data Recovery from an External Drive. Faulty Read Head Prevented Data Access](https://www.exalab.cz/images/blog/EN2306281-obnoveni-dat-z-externiho-disku-fw1200.jpg) ## [ Data Recovery from an External Drive. Faulty Read Head Prevented Data Access ](https://www.exalab.cz/en/blog/from-practice/labnotes/data-recovery-from-an-external-drive-faulty-read-head-prevented-data-access) A Western Digital hard drive manufactured in 2009 served well in a laptop for a long time. When it was time to upgrade to an SSD, it continued to serve the user as an external USB drive. However, 14 years is a long time, which can manifest various issues. This drive, in addition to minor surface defects on the data platters, also exhibited a failure of one read head. Such a fault can make all user data inaccessible. Details By Frantisek Fridrich Frantisek Fridrich Parent Category: [Z praxe](https://www.exalab.cz/en/blog/from-practice) [LABnotes](https://www.exalab.cz/en/blog/from-practice/labnotes) ![Data Recovery from Seagate Drive. Failed to Start After Power Outage](https://www.exalab.cz/images/blog/EN2405022-zachrana-dat-z-disku-Seagate-fw1200.jpg) ## [ Data Recovery from Seagate Drive. Failed to Start After Power Outage ](https://www.exalab.cz/en/blog/from-practice/labnotes/data-recovery-from-seagate-drive-failed-to-start-after-power-outage) Hard drives have been storing our data for decades. This particular one served well for over 10 years, and if not for an unexpected power failure disrupting the symbiotic hum of its read heads and data platters, it probably would have had a few more years of service left. This older Seagate model has an obsolete configuration where the read heads don't have a safe zone outside the data platters, but instead rest in the middle of the platters. Normally, the heads would retract to this area when powered off, but in this case, they got "stuck" on the data platters. Initially, data recovery didn't look very promising, but it was ultimately successful. Details By Frantisek Fridrich Frantisek Fridrich Parent Category: [Z praxe](https://www.exalab.cz/en/blog/from-practice) [LABnotes](https://www.exalab.cz/en/blog/from-practice/labnotes) ![Data Recovery from 256GB Western Digital SSD](https://www.exalab.cz/images/blog/EN2404251-obnova-dat-z-256GB-SSD-Western-Digital-fw1200.jpg) ## [ Data Recovery from 256GB Western Digital SSD ](https://www.exalab.cz/en/blog/from-practice/labnotes/data-recovery-from-256gb-western-digital-ssd) A miniature SSD with a capacity of 256GB. This and many similar SSDs serve as the system disk in most modern computers and contain important, yet often unbacked-up, data. One day, the laptop simply failed to boot the operating system, leaving the user in a difficult situation. However, this story has a happy ending because the failure was not so severe that the data was unrecoverable. Details By Frantisek Fridrich Frantisek Fridrich Parent Category: [Z praxe](https://www.exalab.cz/en/blog/from-practice) [LABnotes](https://www.exalab.cz/en/blog/from-practice/labnotes) ![Data Recovery from a Cracked Flash Drive. Sometimes Data Cannot Be Saved](https://www.exalab.cz/images/blog/EN2404173-Obnova-dat-z-praskleho-flashdisku-fw1200.jpg) ## [ Data Recovery from a Cracked Flash Drive. Sometimes Data Cannot Be Saved ](https://www.exalab.cz/en/blog/from-practice/labnotes/data-recovery-from-a-cracked-flash-drive-sometimes-data-cannot-be-saved) Flash drives, SD cards, SSDs, mobile phones, and other memory media based on NAND memory chips are considered mechanically more durable, and sometimes people assume that such media cannot fail. This case is proof that a fall can destroy a hard drive just as easily as a "non-mechanical" flash drive. Details By Frantisek Fridrich Frantisek Fridrich Parent Category: [Z praxe](https://www.exalab.cz/en/blog/from-practice) [LABnotes](https://www.exalab.cz/en/blog/from-practice/labnotes) ![Data Recovery from Verbatim Drive: Apparent Random Failure of Read Heads](https://www.exalab.cz/images/blog/EN2404241-Zzchrana-dat-z-USB-disku-Verbatim-fw1200.jpg) ## [ Data Recovery from Verbatim Drive: Apparent Random Failure of Read Heads ](https://www.exalab.cz/en/blog/from-practice/labnotes/data-recovery-from-verbatim-drive-apparent-random-failure-of-read-heads) Inside the plastic case was a Toshiba brand disk which one day betrayed its user, resulting in lost data access. The seemingly spontaneous failure could have been due to an impact or fall that the user was unaware of or had forgotten. However, the failure could also have been truly spontaneous, i.e., a material defect. This defect was not fatal for the disk and data but required a relatively technologically complex procedure. Details By Frantisek Fridrich Frantisek Fridrich Parent Category: [Z praxe](https://www.exalab.cz/en/blog/from-practice) [LABnotes](https://www.exalab.cz/en/blog/from-practice/labnotes) ![Data Recovery from Mobile Phones After a Bath. Oxidation Can Cause Extensive Damage](https://www.exalab.cz/images/blog/EN2405141-Zachrana-dat-z-mobilu-po-koupeli-fw1200.jpg) ## [ Data Recovery from Mobile Phones After a Bath. Oxidation Can Cause Extensive Damage ](https://www.exalab.cz/en/blog/from-practice/labnotes/data-recovery-from-mobile-phones-after-a-bath-oxidation-can-cause-extensive-damage) For many of us, the mobile phone has become an indispensable part of everyday life. Some phones are more resistant, others not, and so one of the common causes of mobile phone failure is oxidation of the motherboard, which results from the intrusion of moisture. Rain, a dip in the pond, or in the sea... there are many causes of oxidation. If there is a lot of moisture inside the phone, oxidation can seriously damage some parts of the phone. Details By Frantisek Fridrich Frantisek Fridrich Parent Category: [Z praxe](https://www.exalab.cz/en/blog/from-practice) [LABnotes](https://www.exalab.cz/en/blog/from-practice/labnotes) ![Data Recovery from Flash Drive. Controller Failure Can Be a Very Complicated Defect](https://www.exalab.cz/images/blog/EN2405051-zachrana-dat-z-flash-disku-intenso-1200fw.jpg) ## [ Data Recovery from Flash Drive. Controller Failure Can Be a Very Complicated Defect ](https://www.exalab.cz/en/blog/from-practice/labnotes/data-recovery-from-flash-drive-controller-failure-can-be-a-very-complicated-defect) Flash drives are not among the most reliable data media, and while they use a similar memory chip foundation as those found in SSDs and mobile phones, most flash drives are technologically inferior. When you add the frequently low quality of flash drive components, you end up with a data medium that should only be used to transfer data backed up elsewhere or to store non-essential data. We ultimately resolved this case successfully. Details By Frantisek Fridrich Frantisek Fridrich Parent Category: [Z praxe](https://www.exalab.cz/en/blog/from-practice) [LABnotes](https://www.exalab.cz/en/blog/from-practice/labnotes) ![Záchrana dat z externího disku. V boxu Axago až do pádu fungoval disk Seagate](https://www.exalab.cz/images/blog/EN2404292-zachrana-dat-z-Azago_Seagate-1200-fw.jpg) ## [ Data Recovery from an External Drive. Seagate Drive Worked in Axagon Box Until It Fell ](https://www.exalab.cz/en/blog/from-practice/labnotes/data-recovery-from-an-external-drive-seagate-drive-worked-in-axago-box-until-it-fell) After upgrading the notebook, this Seagate hard drive was placed in an external box and used as external storage. A fall proved to be its downfall; it was not completely destroyed, but it did not escape serious damage. The diagnosis of this disk was not very favorable, but a significant amount of data was still recovered. Details By Frantisek Fridrich Frantisek Fridrich Parent Category: [Z praxe](https://www.exalab.cz/en/blog/from-practice) [LABnotes](https://www.exalab.cz/en/blog/from-practice/labnotes) ![Data Recovery from HDD with Damaged Read Heads. A Detached Slider Did Not Kill the Old Timer](https://www.exalab.cz/images/blog/EA2401061-1-zachrana-dat-z-hdd-w1200.jpg) ## [ Data Recovery from HDD with Damaged Read Heads. A Detached Slider Did Not Kill the Old Timer ](https://www.exalab.cz/en/blog/from-practice/data-recovery-from-hdds-with-damaged-read-heads-a-detached-slider-did-not-kill-the-old-timer) The era of this hard drive began in 2008. After several years, it failed and was stored in a drawer for future data recovery, as the technology at the time of failure was probably not sufficiently advanced. The time for data recovery came in 2023, and although the diagnostics were not entirely positive, in the hands of an experienced technician equipped with modern technologies, data recovery was successfully completed. Details By Frantisek Fridrich Frantisek Fridrich Parent Category: [Blog](https://www.exalab.cz/en/blog) [From Practice](https://www.exalab.cz/en/blog/from-practice) ![SSD Destroyed by a Short Circuit. Hot Air and Chemistry Aided Data Recovery](https://www.exalab.cz/images/blog/EA2311301-main-1200.jpg) ## [ SSD Destroyed by a Short Circuit. Hot Air and Chemistry Aided Data Recovery ](https://www.exalab.cz/en/blog/from-practice/ssd-destroyed-by-a-short-circuit-hot-air-and-chemistry-aided-data-recovery) A relatively unusual issue with an NVMe SSD for the m.2 slot. The SSD showed signs of damage due to a short circuit, which could have been caused by a computer fault, but more likely was a user error or another external intervention. Either way, data recovery in this case required a complete reconstruction of the SSD onto a different motherboard. Details By Frantisek Fridrich Frantisek Fridrich Parent Category: [Blog](https://www.exalab.cz/en/blog) [From Practice](https://www.exalab.cz/en/blog/from-practice) Page 3 of 5 ## Schema ```json { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.exalab.cz/en" }, { "@type": "ListItem", "position": 2, "name": "Blog", "item": "https://www.exalab.cz/en/blog" }, { "@type": "ListItem", "position": 3, "name": "From Practice", "item": "https://www.exalab.cz/en/blog/from-practice.md" } ] } ```